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Journal articles on the topic 'YAG Pulsed lasers'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

SHIMONY, Y., Z. BURSHTEIN, Y. KALISKY, A. BEN-AMAR BARANGA, and M. STRAUSS. "PROGRESS IN Q-SWITCHING OF Nd:YAG SATURABLE ABSORBER." Journal of Nonlinear Optical Physics & Materials 05, no. 03 (1996): 495–504. http://dx.doi.org/10.1142/s0218863596000337.

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We demonstrate the performances of pulsed and CW pumped Nd:YAG lasers, passively Q-switched with Cr 4+: YAG saturable absorbers. Losses contributed by the active Cr4+ ions relate to their excited state absorption. Repetitive Q-switching of the CW pumped Nd:YAG laser was achieved for the first time, providing pulses 80–300 ns wide (FWHM) with repetition rates between 2 and 29 kHz. This laser is applicable where exact pulse timing is not required.

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2

Афанасьєва, Ольга Валентинівна, Наталія Олексіївна Лалазарова та Олена Георгіївна Попова. "Нові технології лазерної поверхневої обробки". Aerospace technic and technology, № 2 (28 квітня 2021): 59–65. http://dx.doi.org/10.32620/aktt.2021.2.07.

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Subject and purpose. Currently, gas, solid-state, and fiber lasers are used to process materials in the aviation industry. For the thermal treatment of steels, gas CO2 lasers with a capacity of more than 1 kW used, which are reliable in operation but have high cost and low efficiency. There are no results on the use of low-power (up to 20 W) pulsed-mode lasers for surface hardening of steel products. The purpose of this work is to determine the modes of surface hardening of products from carbon and alloy steels using low-power solid-state pulsed YAG lasers. Methodology. For laser hardening, a

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3

Antipov, Oleg, Ilya Eranov, Stanislav Balabanov, et al. "High-Repetition-Rate 2.3–2.7 µm Acousto-Optically Tuned Narrow-Line Laser System Comprising Two Master Oscillators and Power Amplifiers Based on Polycrystalline Cr2+:ZnSe with the 2.1 µm Ho3+:YAG Pulsed Pumping." Photonics 11, no. 6 (2024): 555. http://dx.doi.org/10.3390/photonics11060555.

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High-average-power narrow-linewidth tunable solid-state lasers in the wavelength region between 2 and 3 μm are attractive light sources for many applications. This paper reports a narrow-linewidth widely tunable laser system based on the polycrystalline Cr2+:ZnSe elements pumped by repetitively pulsed 2.1 µm Ho3+:YAG laser operating at a pulse rate of tens of kilohertz. An advanced procedure of ZnSe element doping and surface improvement was applied to increase the laser-induced damage threshold, which resulted in an increase in the output power of the Cr2+:ZnSe laser system. The high-average-

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4

IMAI, Shin'ichi, and Kouichi YAMAGATA. "High Brightness Pulsed YAG Lasers and Applications." Review of Laser Engineering 20, no. 1 (1992): 2–10. http://dx.doi.org/10.2184/lsj.20.2.

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5

Rana, Prangya Parimita, and Venkatram Mysore. "Long-pulsed 1064 nm Nd: YAG laser in treatment of palmoplantar warts: A prospective study." Cosmoderma 3 (May 19, 2023): 78. http://dx.doi.org/10.25259/csdm_75_2023.

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Objectives: Palmoplantar warts are a challenge to treat. Standard treatment methods include electrocautery, radiofrequency ablation and cryosurgery, carbon dioxide laser, and Erbium-doped Yttrium Aluminum Garnet laser, which are ablative, invasive, and have downtime. Non-ablative lasers like pulsed dye laser and long-pulsed Neodymium: Yttrium-Aluminum-Garnet (Nd: YAG) have been tried earlier for the treatment of warts to overcome these deficiencies. The aim of the study was to assess the efficacy and safety of long-pulsed 1064 nm Nd: YAG laser in the treatment of palmoplantar warts. Material a

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6

Olsen, F. O., and L. Alting. "Pulsed Laser Materials Processing, ND-YAG versus CO 2 Lasers." CIRP Annals 44, no. 1 (1995): 141–45. http://dx.doi.org/10.1016/s0007-8506(07)62293-8.

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7

Hamoudi, Walid K., Qusay K. Alhashimi, Muna B. Mustafa, Noor R. Abdulhameed, and Hiba H. maqdasi. "Pre-calculated relevant Nd: YAG laser parameters for optimized varicose veins treatment." Journal of Physics: Conference Series 2114, no. 1 (2021): 012053. http://dx.doi.org/10.1088/1742-6596/2114/1/012053.

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Abstract Full clearance of enlarged veins, without side effects, had always been the ultimate dream of patients. Varicose veins’ treatment protocols were not very decisive and mostly associated with some side effects. The aim of this work is to demystify the exact dose of laser parameters; namely fluence and pulse duration, to successfully treat enlarged blood vessels in face, legs and arms without side effects. This necessitated the calculation of exact temperature rise of the targeted tissue before laser irradiation. The pre-calculated laser parameters required, for successful treatment, wit

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8

Wu, Qi, and Jun Wang. "Development in Laser Polishing of Polycrystalline Diamond Tools." Advanced Materials Research 135 (October 2010): 1–6. http://dx.doi.org/10.4028/www.scientific.net/amr.135.1.

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Laser polishing is a surface finishing technology for polycrystalline diamond (PCD) tools by removing uneven diamond particles from the diamond film through graphitization, melting and sublimation. While various types of lasers are used for the polishing of PCD tools, pulsed excimer and Nd: YAG lasers are among the most commonly used ones. The current development in laser polishing of PCD tools is reviewed. The reported experimental and modelling studies to improve the process performance are discussed. It reveals that there is a severe dearth of understanding of the process and the associated

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9

Kung, A. H., Suli Fei, and H. L. Strauss. "Mid-Infrared Sources Using Dye Lasers in KTiOAsO4 and LiIO3." Applied Spectroscopy 50, no. 6 (1996): 790–94. http://dx.doi.org/10.1366/0003702963905745.

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A coherent infrared source tunable from 3.4 to 5.3 μm has been constructed by difference-frequency mixing of the second harmonic of a Q-switched Nd:YAG laser and a pulsed dye laser using the new crystal KTiOAsO4 (KTA). A peak power of >50 kW and pulse energy of >250 μJ are measured at 4.4 μm. The results are compared with mixing in LiIO3. For a low-power Nd:YAG laser that produces 200 mJ of 532-nm radiation, the infrared power is similar for the two crystals. For high-power YAG lasers, calculation shows that commercial KTA crystals can produce over 10 mJ of IR power in the absence of abs

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10

Antipov, O. L. "High efficiency in-band pumped Tm- and Ho-doped 2-μm solid-state lasers". Journal of Physics: Conference Series 2494, № 1 (2023): 012009. http://dx.doi.org/10.1088/1742-6596/2494/1/012009.

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Abstract The expansion of laser sources operating at 2-3 μm is motivated in large by strong absorption in atmospheric gases, liquid water, and plastics, critical for applications in remote sensing, soft and hard tissue surgery, and materials processing. 2-μm novel solid-state lasers based on Tm3+-doped ceramics (Lu2O3 or Y2O3) or YAP crystals in-band pumped by a fiber laser at 1670 nm are presented in this report. CW, actively or passively Q-switch operations of the Tm3+-doped lasers are described. The Tm3+ laser characteristics are compared with parameters of an in-band fiber-laser-pumped Ho3

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11

Liu, Shiyong, Yi Liu, and Jyotirmoy Mazumder. "TEM Study of AA 6111 Weld by Pulsed YAG Lasers." Microscopy and Microanalysis 8, S02 (2002): 1452–53. http://dx.doi.org/10.1017/s1431927602107690.

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12

Sun, Yan. "Comparative analysis of three mode-selection methods for solid-state lasers." E3S Web of Conferences 268 (2021): 01068. http://dx.doi.org/10.1051/e3sconf/202126801068.

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In the Nd3+:YAG pulsed Q-switched laser system, the selective output of several low order modes of TEM00, TEM01 and TEM11 is realized by adding a iris diaphragm, a telescope or a Gaussian mirror at an appropriate position in the resonator, and the three are compared and analyzed.

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13

Klassen, N. V., and P. V. Provotorov. "Spatial and spectral features of the luminescence of liquid nitrogen stimulated by infrared lasers." Journal of Physics: Conference Series 2056, no. 1 (2021): 012038. http://dx.doi.org/10.1088/1742-6596/2056/1/012038.

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Abstract Spectral features of cryogenic liquids, especially nitrogen, seem to be clearly investigated due to the wide application in science. On the other hand, material properties can really be different under intensive laser irradiation. During irradiation of liquid nitrogen with pulsed (pulse duration 20 ns) YaG: Nd 1064 nm laser with average power of 0.3 W we have found bright luminescence in the visible region with five narrow spectral lines. This phenomenon can be explained by the multiphoton excitation of nitrogen molecules and ions with infrared photons. Its spatial and spectral charac

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14

Hendawy, Alyaa Farouk, Dalia Gamal Aly, Hisham Aly Shokeir, and Nevien Ahmed Samy. "Comparative Study Between the efficacy of Long-Pulsed Neodymium- YAG Laser and Fractional Co2 Laser in the Treatment of Striae Distensae." Journal of Lasers in Medical Sciences 12, no. 1 (2021): e57-e57. http://dx.doi.org/10.34172/jlms.2021.57.

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Introduction: Stretch marks, or striae distensae (SD), are the lesions of the dermis caused by its linear atrophy at the sites of stretching. They occur in more than 70% of pregnant women and adolescents as a result of cutaneous stretching. This study aimed at evaluating and comparing the clinical and histological efficacy of the fractional CO2 laser versus the long pulsed (LP) Nd: YAG laser in the treatment of striae alba. Methods: Thirty female subjects having bilateral symmetrical stretch marks were managed by the LP Nd: YAG laser on the right side and the fractional CO2 laser on the left s

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15

Prezzano, James C., Christopher T. Richardson, Glynis A. Scott, and Sherrif F. Ibrahim. "Extensive Primary Anetoderma Refractory to Erbium YAG Fractionally Ablative Laser." SKIN The Journal of Cutaneous Medicine 4, no. 3 (2020): 284. http://dx.doi.org/10.25251/skin.4.3.14.

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Primary anetoderma is a rare elastolytic disorder characterized by well-circumscribed flaccid, atrophic macules and patches caused by focal loss of elastic fibers. Anetoderma is divided into two forms: primary, which is idiopathic and occurs on clinically normal skin, and secondary, which follows a prior dermatosis. Although it is indolent, the lesions of anetoderma persist and may be associated with significant aesthetic changes causing potential psychosocial difficulties. Anetoderma has been successfully treated with ablative, pulsed dye and non-ablative fractionated lasers. Patients with se

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16

Lee, So Yeon, Hye Ran Kim, Jin Seo Park, et al. "The Efficacy and Safety of a Low-Fluence 1064 nm Picosecond ND-YAG Laser Compared with Those of a Low-Fluence Photoacoustic Therapy Pulsed (PTP) Mode 1064 nm Q-Switched ND-YAG Laser for Treatment of Melasma: A Prospective Split-Face Study." Dermatologic Therapy 2023 (June 26, 2023): 1–10. http://dx.doi.org/10.1155/2023/5961152.

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Melasma is a challenging pigmentation disorder to treat, and although low-fluence 1064 nm picosecond ND-YAG lasers have shown potential for treating benign pigmented disorders, data on the use of this laser for melasma treatment are currently insufficient. In this prospective split-face study, twenty-four patients with melasma on the face were enrolled and randomly assigned to receive treatment on one side of the face either with a low-fluence 1064 nm picosecond ND-YAG laser or with a low-fluence PTP mode 1064 nm Q-switched ND-YAG laser. Laser treatment was performed 5 times at intervals of 2

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17

Wang, Wen Yan, Jing Pei Xie, H. Yan, Ji Wen Li, Luo Li Li, and Jin Ling Hou. "Local Structures and Decomposed Phases of Laser-Melted ZrSiO₄." Key Engineering Materials 368-372 (February 2008): 1552–54. http://dx.doi.org/10.4028/www.scientific.net/kem.368-372.1552.

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Behaviors of CO2 and pulsed YAG laser melting of ZrSiO4 have been investigated using infrared (IR) spectroscopy. The laser-melted ZrSiO4 decomposed into binary oxides (ZrO2 and SiO2), while other phases or complex ZrSiO4 tetrahedron networks are also observed. The local structures and the phases of the quenched melts depend strongly on the quenching rate and melting conditions. Monoclinic ZrO2 are found to be the main ZrO2 phase in the samples treated by CO2 laser, although tetragonal ZrO2 was found near boundaries between the untreated and melted regions. High concentrations of tetragonal ZrO

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18

Masato, Yano, Nakajima Akio, Arai Tsunenori, et al. "The stydy for LTK using pulsed mid infrared lasers: comparison of corneal tissue coagulation using Ho: YAG and Tm: YAG Lasers." JOURNAL OF JAPAN SOCIETY FOR LASER SURGERY AND MEDICINE 15, Supplement (1994): 105–8. http://dx.doi.org/10.2530/jslsm1980.15.supplement_105.

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19

Chludzinski, Mariane, Rafael Eugenio dos Santos, Marta Ortega-Iguña, Cristina Churiaque, Manuel Porrúa-Lara, and José María Sánchez-Amaya. "Low-Energy Pulsed-Laser Welding as a Root Pass in a GMAW Joint: An Investigation on the Microstructure and Mechanical Properties." Materials 15, no. 21 (2022): 7741. http://dx.doi.org/10.3390/ma15217741.

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Root pass is a fundamental step in multi-pass welding. In gas metal arc welding (GMAW), the weld bead qualities depend on the process parameters, filler materials, and welder abilities. This work investigates the effect of a Nd: YAG pulsed laser as a first pass to reduce the welders’ reliance on the AH36 low-alloy steel with 5.5 mm thickness. This autogenous automatable process delivers reduced thermal impact due to the concentrated high-energy source, pulse overlap, and higher penetration depth-to-power ratio than continuous lasers. The outcomes indicate that the PL as a root welding generate

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20

Allameh, Farzad, Atefeh Javadi, Sahar Dadkhahfar, et al. "A Systematic Review of Elective Laser Therapy during Pregnancy." Journal of Lasers in Medical Sciences 12, no. 1 (2021): e50-e50. http://dx.doi.org/10.34172/jlms.2021.50.

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Introduction: Currently, lasers are used to treat many diseases and their complications. However, the use of lasers in pregnant patients is still controversial. Methods: In this review, the application of lasers in the fields of urology, surgery, obstetrics, dermatology, and musculoskeletal disorders is evaluated. The following keywords were used to search through PubMed, Google Scholar, and Scopus: pregnancy, laser, urolithiasis, endovenous laser ablation (EVLA) or treatment, leg edema, varicose vein, venous insufficiencies, hair removal, pigmentation, telangiectasia, vascular lesions, Q swit

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21

Yudin, Nikolay, Oleg Antipov, Stanislav Balabanov, Ilya Eranov, Yuri Getmanovskiy, and Elena Slyunko. "Effects of the Processing Technology of CVD-ZnSe, Cr2+:ZnSe, and Fe2+:ZnSe Polycrystalline Optical Elements on the Damage Threshold Induced by a Repetitively Pulsed Laser at 2.1 µm." Ceramics 5, no. 3 (2022): 459–71. http://dx.doi.org/10.3390/ceramics5030035.

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Polycrystalline zinc selenide (ZnSe) and Cr2+ or Fe2+ doped ZnSe are key optical elements in mid-infrared laser systems. The laser-induced damage of the optical elements is the limiting factor for increasing the power and pulse energy of the lasers. In the present work, the optical damage of the ZnSe, Cr2+:ZnSe, and Fe2+:ZnSe samples induced by a repetitively pulsed Ho3+:YAG laser at 2091 nm was studied. The probability of the optical damage and the laser-induced damage threshold (LIDT) were determined for the samples manufactured using different processing techniques. The highest LIDT was fou

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22

Ismiralda, Oke Putranti, and Fawzy Ahmad. "Managing Burn Scar with a Combination Therapy of Long Pulsed 1064 Nm Nd: YAG (LPND) Laser, Topical Tretinoin and Hydroquinone." INTERNATIONAL JOURNAL OF MEDICAL SCIENCE AND CLINICAL RESEARCH STUDIES 02, no. 07 (2022): 619–23. https://doi.org/10.5281/zenodo.6826019.

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<strong>Background: </strong> Burn scars are associated with significant morbidity ranging from pigmentation, pruritus, pain, contractures and disfigurement to psychosocial impairment. Newer and advanced therapies for the treatment of burn scars have been developed, including lasers, and other topical treatments   <strong>Case Illustration</strong>: An asian woman with history of having hypertrophic scar arising from the edges of previous skin graft for her second degree of burns. We performed contact-mode long pulsed 1064 nm Nd:YAG laser treatment in combination with topical tr

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23

Semerok, A., S. V. Fomichev, J. M. Weulersse, F. Brygo, P. Y. Thro, and C. Grisolia. "Heating and ablation of tokamak graphite by pulsed nanosecond Nd-YAG lasers." Journal of Applied Physics 101, no. 8 (2007): 084916. http://dx.doi.org/10.1063/1.2721750.

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24

Mateo, M. P., L. M. Cabalín, and J. J. Laserna. "Chemical Imaging Using Microline Laser Ablation: Performance Comparison of Gaussian and Flat Top Lasers." Applied Spectroscopy 57, no. 3 (2003): 343–48. http://dx.doi.org/10.1366/000370203321558272.

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In previous studies, the potential of a microline imaging arrangement for surface characterization of solid samples in air at atmospheric pressure using laser-induced plasma spectrometry (LIPS) has been demonstrated. An improvement of this approach to obtain a uniform ablation along the microline focus that leads to a representative spatial distribution of elements on the sample surface is presented. For this purpose, the influence of beam energy distribution of two types of Nd: YAG pulsed lasers (a Gaussian laser and a flat top laser) on lateral resolution, intensity profiles of elements, che

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25

Elalem, Abdulkarim A., and Suleiman Elhamali. "Effect of Applying Nd-YAG Laser on Microstructure and Hardness of AISI 1012 Steel Surface." International Science and Technology Journal 35, no. 1 (2024): 1–9. http://dx.doi.org/10.62341/nael2035.

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The unique characteristics of the laser beam such as directionality, monochromaticity, and brightness make it a very important tool in the surface treatment engineering. The concentrated heat in the laser beam can be precisely directed toward the processed region on the surface. The laser beam power, beam size, and scanning velocity are easily controlled during the different processing methods. Laser surface modifications of metallic materials, such as laser surface melting, laser surface alloying, and laser cladding are some of the most important methods to improve the mechanical properties o

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Knezevic, Dragan, Bojana Radojkovic, Slavica Ristic, et al. "Monitoring of a ceramic surface temperature field induced by pulsed Nd:YAG laser." Thermal Science, no. 00 (2019): 425. http://dx.doi.org/10.2298/tsci190811425k.

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Temperature distribution induced by laser radiation is a very important parameter for an efficient and safe application of lasers in different ceramic processing techniques. This paper presents the results of an infrared thermography (IRT) application for monitoring temperature distribution on a ceramic surface during Nd: YAG laser irradiation with different fluences and 8ns pulse duration. FLIR, E40 and SC7200 IR cameras were used with the aim of recording the maximum temperature in the irradiated zones. It was expected that IRT could give some information related to the heat affected zone an

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27

Karim, Maria, Marlyn Wu, and Adriana Ros. "Multinucleate Cell Angiohistiocytoma: A Case Report and Unique Treatment Consideration." SKIN The Journal of Cutaneous Medicine 5, no. 6 (2021): 685–88. http://dx.doi.org/10.25251/skin.5.6.15.

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Introduction: Multinucleate cell angiohistiocytoma (MCAH) is a benign, yet exceedingly rare vascular and firbiohistiocytic proliferation. The lesions are typically asymptomatic and are commonly cosmetically displeasing to patients. 1 Previous reports have demonstrated success in treating MCAH with fractional ablative CO2 laser, argon laser, pulsed dye laser, and KTP lasers. 3 The scarcity of reported cases may suggest that the lesion is commonly misdiagnosed, and we report this case to highlight the characteristic features of MCAH with successful treatment with Neodymium YAG laser. Case

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28

Ruzankina, Iuliia, Vadim Parfenov, Oleg Vasiliev, Oleg Zotov, and Alexandra Zotova. "Laser Treatment as a New Approach to the Passivation of Iron-Based Historical Monuments." Quantum Beam Science 6, no. 1 (2022): 9. http://dx.doi.org/10.3390/qubs6010009.

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This article is devoted to the study of the possibility of the passivation of iron-based metallic materials. The experimental results obtained for the laser treatment of carbon steel model samples by the radiation of repetitively pulsed and continuous-wave 1.064 µm Nd:YAG lasers are described. It is shown that the laser treatment allows the formation of dense protection films, 62–77 microns thick, on the steel surface. The films enhance the anticorrosion properties of the metal. Exposure to laser radiation reduces the surface roughness (from Ra = 0.53 µm to Ra = 0.38 µm). Laser radiation power

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29

Al-Zaidi, H. K., M. J. Al-Bermani, and A. M. Taleb. "Reentry of Space Debris from Low Earth Orbit by Pulsed Nd:YAG Laser." Journal of Kufa-Physics 12, no. 02 (2020): 39–51. http://dx.doi.org/10.31257/2018/jkp/2020/120204.

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This research studies the orbital dynamics of space debris in near earth orbit. The orbital dynamics of space debris is closely examined in near earth orbit whereby (apogee altitude ha=1200 km and perigee altitude hp=200 km). In addition, the lifetime of the space debris is calculated using the influence of the friction force exerted on the atmospheric particles with debris dimensions measuring between (1 and 10 cm). In this study, the Drag Thermospheric Models (DTM78 and DTM94) are used because of their dependence on solar and geomagnetic activities, and pulsed lasers are utilized to interact

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Al-Zaidi, H. K., M. J. Al-Bermani, and A. M. Taleb. "Reentry of Space Debris from Low Earth Orbit by Pulsed Nd:YAG Laser." Journal of Kufa-Physics 12, no. 02 (2020): 39–51. http://dx.doi.org/10.31257/2018/jkp/2020/120204.

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This research studies the orbital dynamics of space debris in near earth orbit. The orbital dynamics of space debris is closely examined in near earth orbit whereby (apogee altitude ha=1200 km and perigee altitude hp=200 km). In addition, the lifetime of the space debris is calculated using the influence of the friction force exerted on the atmospheric particles with debris dimensions measuring between (1 and 10 cm). In this study, the Drag Thermospheric Models (DTM78 and DTM94) are used because of their dependence on solar and geomagnetic activities, and pulsed lasers are utilized to interact

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31

Jannah, A. N., S. A. Halim, and H. Abdullah. "Surface Morphology Studies on Laser Irradiated Target and Bi(Pb)SrCaCuO Thin Films." Materials Science Forum 995 (June 2020): 89–93. http://dx.doi.org/10.4028/www.scientific.net/msf.995.89.

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In this study, pulsed laser deposition technique was used to deposit bismuth plumbum strontium calcium copper oxide {Bi (Pb)SrCaCu0} thin films on MgO single crystal substrate. Solid state procedure which is inexpensive technique used in the production process of the Bi (Pb)SrCaCu0 superconductor bulk sample. In this work, Handy YAG Lasers (model: HYL 101 E) has been used. It is a high power class 4 solid state (ND: YAG) Q-switched pulsed laser and 532 nm (visible green: second harmonic) has been used to ablate the films. The substrate used in this work was single crystal MgO with the (100) or

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32

Tomaru, Takanobu, Herbert J. Geschwind, George Boussignac, Françoise Lange, and Seung Jea Tahk. "Characteristics of shock waves induced by pulsed lasers and their effects on arterial tissue: Comparison of excimer, pulse dye, and holmium YAG lasers." American Heart Journal 123, no. 4 (1992): 896–904. http://dx.doi.org/10.1016/0002-8703(92)90693-p.

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Traxer, Olivier, and Mariela Corrales. "Managing Urolithiasis with Thulium Fiber Laser: Updated Real-Life Results—A Systematic Review." Journal of Clinical Medicine 10, no. 15 (2021): 3390. http://dx.doi.org/10.3390/jcm10153390.

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Thirty-three years ago, pulsed lasers marked the beginning of a new era in endoscopic lithotripsy, and the one that was highlighted because of its potential was the Holmium: YAG laser, which became and still is the gold standard in endourology. Recently, a new laser technology has been accepted for clinical use in lithotripsy: the thulium fiber laser (TFL), showing appealing characteristics not seen before in several preclinical studies. A review of the literature was performed and all relevant in vitro studies and clinical trials until April 2021 were selected. The search came back with 27 cl

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Tomaru, Takanobu, Herbert J. Geschwind, George Boussignac, Françoise Lange, and Seung Jea Tahk. "Comparison of ablation efficacy of excimer, pulsed-dye, and holmium-YAG lasers relevant to shock waves." American Heart Journal 123, no. 4 (1992): 886–95. http://dx.doi.org/10.1016/0002-8703(92)90692-o.

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Zeb, Muhammad, Muhammad Tahir, Fida Muhammad, et al. "Amplified Spontaneous Emission and Optical Gain in Organic Single Crystal Quinquethiophene." Crystals 9, no. 12 (2019): 609. http://dx.doi.org/10.3390/cryst9120609.

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In this paper, we report optical characteristics of an organic single crystal oligomer 5,5⁗-diphenyl-2,2′:5′,2″:5″,2‴:5‴,2⁗-quinquethiophene (P5T). P5T crystal is a thiophene/phenylene co-oligomer that possesses better charge mobility as well as photoluminescence quantum efficiency (PLQE) as compared to other organic materials. Stimulated emission in P5T is investigated via amplified spontaneous emission (ASE) measurements within broad pump energies ranging from 35.26 to 163.34 µJ/cm2. An Nd-YAG femtosecond-tunable pulsed laser is used as a pump energy source for the ASE measurements of P5T cr

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Kono, Takahiro, Kazuma Hashimoto, Keisuke Fukuda, Uma Maheswari Rajagopalan, Kae Nakamura, and Jun Yamada. "Noise Reduction in LED-Based Photoacoustic Imaging." Photonics 12, no. 4 (2025): 398. https://doi.org/10.3390/photonics12040398.

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Photoacoustic tomography (PAT), also known as optoacoustic tomography, has been emerging as a biomedical imaging modality that can provide cross-sectional or three-dimensional (3D) visualization of biological tissues such as blood vessels and lymphatic vessels in vivo at high resolution. The principle behind the visualization involves the light being absorbed by the tissues which results in the generation of ultrasound. Depending on the strength of ultrasound and its decay rate, it could be used to visualize the absorber location. In general, pulsed lasers such as the Q-switched Nd-YAG and OPO

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Abdulwaahb, Hala Mahmood, Bassam G. Rasheed, and Hanadi H. Altawil. "Deposition of MgO Nanoparticles by Laser Pyrolysis." Al-Nahrain Journal for Engineering Sciences 25, no. 1 (2022): 20–27. http://dx.doi.org/10.29194/njes.25010020.

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Magnesium oxide nanoparticles were deposited by laser pyrolysis process. Three types of lasers were employed CW CO2, Q-switched Nd-YAG (short pulses) and long pulses Nd-YAG lasers. The size and density of nanoparticles vary with laser energy, power, pulse duration and the scanning speed of the laser. In this method, MgO nanoparticles were deposited by a laser beam on a quartz substrate from aqueous solution of magnesium nitrate. AFM images reveal formation of small nanoparticle size of 24.5 nm with surface roughness 6.97nm by Q-switched Nd-YAG laser (10 ns) when the energy was 1J. While for CO

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Mordon, S. R., A. H. Cornil, J. M. Brunetaud, B. Gosselin, and Y. Moschetto. "Nd-YAG laser thermal effect: Comparative study of coagulation in rat liver in vivo by continuous wave and high power pulsed lasers." Lasers in Medical Science 2, no. 4 (1987): 285–94. http://dx.doi.org/10.1007/bf02594173.

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Suzuki, Takanori, Kohei Kurokawa, Kazuhiro Suzuki, Hiroomi Higashi, and Hidetoshi Yamanaka. "Basic study of the difference between Nd: YAG pulsed and continuous wave lasers on thermotherapy for the prostate gland." JOURNAL OF JAPAN SOCIETY FOR LASER SURGERY AND MEDICINE 17, Supplement (1996): 327–30. http://dx.doi.org/10.2530/jslsm1980.17.supplement_327.

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El-Agmy, Reda M., and Najm M. Al-Hosiny. "Thermal analysis and CW laser operation at 1.998 µm in end pumped Tm:YAP lasers." Photonics Letters of Poland 11, no. 4 (2019): 103. http://dx.doi.org/10.4302/plp.v11i4.938.

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We report on thermal analysis and a continuous wave (CW) laser operation at (1.998µm) of end pumped Tm: YAP cylindrical laser rod. The Tm: YAP laser rod is pumped at a wavelength of 1.064 µm emitting from Nd: YAG laser source. A 3W incident pump power is used to generate a maximum laser output of 700 mW, representing 18% slope efficiency. The power of thermally induced lens in Tm:YAP laser rod is numerically analyzed and validated experimentally. The focal lengths of the thermally induced lens are directly measured using Shack-Hartmann wavefront sensor. We have detected blue up-conversion fluo

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Pogrebnyak, N. I., S. F. Dyubko, M. P. Perepechai, and A. S. Kutsenko. "INVESTIGATION OF THE SPECTRUM OF ZN I ATOMS IN THE TRIPLET RYDBERG STATES." Radio physics and radio astronomy 26, no. 3 (2021): 256–69. http://dx.doi.org/10.15407/rpra26.03.256.

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Purpose: This work aims at investigating the zinc atoms in the triplet preionization – Rydberg states. The energy levels of atoms having two electrons outside the closed shell were studied mainly by the optical spectroscopy methods. However, just using the microwave spectroscopy to measure the frequency of transitions between the two Rydberg states allows to increase the accuracy of measurements in two or more orders of magnitude. Disign/methodology/approach:A line of three dye lasers is used to excite the zinc atoms into the triplet Rydberg states with a predetermined set of quantum numbers.

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Sara, Abdul Hussien, and Mahdi Salih Abdul-Kareem. "Absorption Activity Investigation of Saturable Absorber for Dual Wavelengths in Laser Passive Q-Switching System." Indian Journal of Science and Technology 17, no. 6 (2024): 577–82. https://doi.org/10.17485/IJST/v17i6.2822.

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Abstract <strong>Objective:</strong> The absorption activity of saturable absorber material (Cr+4: YAG) for dual wavelengths (1.064 μm and 0.946 μm), simultaneously generated in same passive Q-switching system, has been investigated. <strong>Methods:</strong> This study utilized the mathematical model that was used in our previous study. Rung-Kutta—Fehelberge numerical method has been used to solve this mathematical model. Nd+3: YAG used as an effective medium and Cr+4: YAG used as a saturable absorber in the laser passive Q-switching optical system.<strong> Fin

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Jaber, Ghufran S., Khawla S. Khashan, and Maha J. Abbas. "Preparation ZnO nanoparticles with Different Concentration by Laser Ablation in Liquid." Engineering and Technology Journal 39, no. 1B (2021): 197–202. http://dx.doi.org/10.30684/etj.v39i3a.1880.

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The effects of varying laser pulse numbers on the fabricated of ZnONPs by pulsed laser ablation in deionized water of Zn-metal are investigated. The Nd: YAG laser at energy 600mJ prepared three samples by change the laser pulse number (100, 150, and 200). The results were collected and examined using an electron scanning microscope, XRD – diffraction, and transmission electron microscope. The result revealed the colloidal spherical shape and the homogeneous composition of the ZnO NPs. The nanoparticles resulted in different concentrations and sized distributions by changing the pulse number of

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Wang, Xiaolei, Chaoyi Zhang, Yanlu Zhang, Shengying Fan, Xinqiang Ma, and Wei Cheng. "Sub-Nanosecond, High Peak Power Yb:YAG/Cr4+:YAG/YVO4 Passively Q-Switched Raman Microchip Laser with the Emission of Multiple Pulses." Photonics 11, no. 1 (2024): 61. http://dx.doi.org/10.3390/photonics11010061.

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This paper demonstrates the capability of sub-nanosecond, high peak power Yb:YAG/Cr4+:YAG/YVO4 passively Q-switched Raman microchip lasers at 1134 nm operated in multiple pulses mode under quasi-continuous-wave (QCW) pumping. Total pulse energy for the Stokes laser was 1.8 mJ with a 4 mm YVO4 crystal and TOC = 16%. The corresponding pulse repetition rate reached 225 kHz within a single pumping pulse. By employing a compact plane-concave cavity and 5 mm YVO4 crystal, the single pulse energy for the Raman laser was further scaled up to 44 μJ. The corresponding peak power was 95 kW. A highest out

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Sineok, A. E., A. V. Zolotarev, and G. A. Nikolaeva. "Morphological studies of the cadaveric sclera after nonpenetrating sclerotomy by ND: YAG laser." Russian Ophthalmological Journal 11, no. 4 (2018): 64–67. http://dx.doi.org/10.21516/2072-0076-2018-11-4-64-67.

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Purpose: to reveal the changes of the morphological structure of cadaveric human sclera after Nd: YAG laser irradiation.Material and methods. Laser pulses (Nd: YAG) (Lumenis) (power 7.0–7.4 mW, pulse duration 4 ns, wavelength 1064 nm) were applied to the sclera of an isolated eyeball at a distance of 4 to 8 mm from the limbus. Three irradiation types were used: one series of single pulses, a series of triple pulses, and a series of six pulses.Results. Incisions created with single pulses showed insignificant surface defects of the sclera. In triple pulses, the defect of the anterior layers of

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Sara, Abdulhussain, and Mahdi Salih Abdul-Kareem. "Rate Equations Model to Simulate the Dual Generation of Nd+3: YAG Passive Q-Switched Laser Pulses." Indian Journal of Science and Technology 16, no. 40 (2023): 3462–70. https://doi.org/10.17485/IJST/v16i40.1748.

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Abstract <strong>Objective:</strong> Rate equations model has been formulated to simulate the simultaneous generation of two passive Q-switching pulses using one active medium. It is possible to separate them and employ each pulse in practical applications.<strong> Methods:</strong> The model was solved numerically by used Rung–kutta–Fahelberg method. This model was tested in the study of the effect of saturable absorber ions concentration on the duration, energy, and power of the dual pulses which are generation by passive Q-switching of . <strong>Finding:</str

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Ahmed, Rasha Hamid, Anas Abd Abdullah, and Bakr Fayyadh Hassan. "Preparation of Aluminum Nanoparticles and Study of the Laser Effect on them by the Laser Ablation Method." NeuroQuantology 19, no. 7 (2021): 144–48. http://dx.doi.org/10.14704/nq.2021.19.7.nq21097.

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In this research, aluminum nanoparticles (AL NPs) were prepared using the Nd-YAG pulsed laser ablation method with a wavelength of 1064 nm with a frequency of 6 Hz and a fixed pulse of 250 pulses. A pure aluminum metal target was immersed in ethanol and aluminum nanoparticles removed using five different laser energies ranging from (400-800) mj and the effect of the laser energy difference on the optical properties of aluminum nanoparticles was studied. The optical properties were studied using UV spectroscopy for both the absorption and transmittance spectrum and according to the change of la

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Majeed, Munaf S., Rabea Q. Nafil, Marwa F. Abdul Jabbar, and Kadhim H. Suffer. "Preparation of ZnO Nanoparticles by 1064/532nm Laser Ablation and Studying the Effect of the Ablation Wavelength." Materials Science Forum 1021 (February 2021): 171–80. http://dx.doi.org/10.4028/www.scientific.net/msf.1021.171.

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We prepared Zinc oxide nanomaterial employing PLA (pulsed laser ablation) technique. A pure Zn target was immersed in ultra-pure water (UPW) and it was subjected to several pulses (1st. and 2nd. harmonic) of the pumping Nd: YAG laser. The influence of changing laser’s wavelength (1064, 532) nm on the characterization of the produced nanoparticles was studied. The results obtained from studying the structure, topography, and morphology of the product showed that the particles have a hexagonal shape. Also, changing the wavelength of the laser from 532nm to 1064nm leads to size reduction and dens

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Majeed, Munaf S., Raghad Majeed Rasheed, Muhsin Jaber Jweeg, M. N. Mohammed, Thamer Adnan Abdullah, and Oday I. Abdullah. "Study the Effect of Using Carbon Nanoparticles Synthesized by Second Harmonic (Nd: Yag 532 nm) Laser Ablation on Microbial Fuel Cell Performance." Polish Journal of Chemical Technology 27, no. 1 (2025): 38–43. https://doi.org/10.2478/pjct-2025-0005.

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Abstract Pulsed laser ablation in liquid (PLAL) is one of the main techniques for synthesizing nanoparticle materials. The carbon target was dissolved in ultrapure water (UPW) and exposed to a Q-switched Nd: YAG laser (1064 nm) with a 6 ns pulse duration to produce carbon nanoparticles. In this sequence, the Nd: YAG laser beam was focused on the carbon surface. In the investigation of nanoparticles prepared by laser irradiation, the effect of different incident laser pulse energies (500, 1000 mJ) on particle sizes (52.09, 26.49 nm) was observed by atomic force microscopy (AFM), pH test, and li

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Hussein, Jasim Mohamad, Saif Khalel Jasim, Tariq Faraj Abdullah, and Awatif Saber Jasim. "Study and Characterization ZnO Nanoparticles Prepared by Switched Laser Nd:YAG." Indonesian Journal of Material Research 2, no. 3 (2024): 73–78. http://dx.doi.org/10.26554/ijmr.20242340.

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In this research, zinc nanoparticles were prepared using pulsed laser ablation in liquids. A pulsed Nd+:YAG laser with wavelength (532 nm) was applied to a pure zinc target immersed in deionized water, and the structural and optical properties of the prepared zinc nanoparticles were studied. The behavior of the UV absorption spectra of zinc nanoparticles was studied as a function of pulse number and ablation energy. The UV-vis absorption spectra showed absorption peaks in the ultraviolet region and in the visible region, the latter being responsible for the formation of zinc nanoparticles, and

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