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Journal articles on the topic 'Laser - fil'

Author: Grafiati

Published: 8 June 2024

Last updated: 31 July 2025

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1

Aline Evangelista Souza-Gabriel, Daniela Thomazatti Chimello-Sousa, Regina Guenka Palma-Dibb, Jesus Djalma Pécora, and Silmara Aparecida Milori Corona. "Morphologic assessment of dental surface/ glass ionomer cement interface: influence of Er:YAG laser pretreatment." RSBO 9, no. 4 (2013): 382–7. http://dx.doi.org/10.21726/rsbo.v9i4.1017.

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The aim of this study was to assess the surface and the substrate/glass ionomer cement (GIC) interface after Er:YAG laser irradiation by means of scanning electron microcopy. Material and methods: Thirty human third molars were selected and had their roots removed. Crowns were sectioned to obtain discs that were randomly assigned to three groups according to the surface pretreatment: 40% polyacrylic acid (control); Er:YAG laser irradiation (80mJ/2Hz) or Er:YAG laser followed by 40% polyacrylic acid. Two discs of each group were put aside to the surface analysis and the others were bisected. On

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Hetrodt, Franziska, Julian Lausch, Hendrik Meyer-Lueckel, Georg Conrads, and Christian Apel. "Evaluation of Restorative Materials Containing Preventive Additives in a Secondary Caries Model in vitro." Caries Research 53, no. 4 (2019): 447–56. http://dx.doi.org/10.1159/000496401.

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The incorporation of antibacterial agents into dental restorative materials is a promising strategy for secondary caries prevention. Previously, Carolacton affected Streptococcus mutans biofilm formation on composite materials in vitro. The present study evaluated secondary caries formation adjacent to Carolacton-containing composites and conventional restorative materials using an artificial biofilm model. Standardized cavities were prepared in bovine dentin-enamel samples (n = 175) and restored with various dental materials (Tetric EvoCeram [T], GrandioSo composite without [G] and with Carol

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Karobari, Mohmed Isaqali, Rumesa Batul, Niher Tabassum Siddiqua Snigdha, Matheel AL-Rawas, and Tahir Yusuf Noorani. "Evaluation of push-out bond strength, dentinal tubule penetration and adhesive pattern of bio-ceramic and epoxy resin-based root canal sealers." PLOS ONE 18, no. 11 (2023): e0294076. http://dx.doi.org/10.1371/journal.pone.0294076.

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Introduction Root canal sealing materials play a crucial role in an endodontic procedure by forming a bond between the dentinal walls and the gutta-percha. The current study aims to analyse the dentinal tubule penetration and adhesive pattern, including the push-out bond strength of six commercially available root canal sealers. Methodology Eighty-four mandibular first premolars were split into seven groups (and n = 12), Group 1: Dia-Root, Group 2: One-Fil, Group 3: BioRoot RCS, Group 4: AH Plus, Group 5: CeraSeal, Group 6: iRoot SP, Group 7: GP without sealer (control). Two groups were made,

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Souza, Beatriz Martines de, Daiana Moreli Soares dos Santos, and Ana Carolina Magalhães. "Antimicrobial and Anti-Caries Effect of New Glass Ionomer Cement on Enamel Under Microcosm Biofilm Model." Brazilian Dental Journal 29, no. 6 (2018): 599–605. http://dx.doi.org/10.1590/0103-6440201802163.

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Abstract The occurrence of caries lesions adjacent to restorations is a serious problem in Dentistry. Therefore, new antimicrobial restorative materials could help to prevent recurrent carious lesions. This study evaluated the effect of a new glass ionomer cement (Ion Z) on the viability of a microcosm biofilm and on the development of enamel demineralization. Enamel samples were filled with the following materials (n=9): A) Ion-Z (FGM Ltda); B) Maxxion R (FGM Ltda); C) Ketac Fil Plus (3M ESPE) and D) no restoration (control). The samples were then exposed to human saliva mixed with McBain sal

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5

Poreba, Martyna, and François Goulette. "Recalage rigide de relevé laser par mise en correspondance robuste basée sur des segments." Revue Française de Photogrammétrie et de Télédétection, no. 207 (September 24, 2014): 3–17. http://dx.doi.org/10.52638/rfpt.2014.208.

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Le recalage se révèle indispensable pour assembler des relevés laser devant servir à l'analyse, à la documentation et à la reconstruction tridimensionnelle d'environnements. Ce problème apparaît lorsqu'une zone d'intérêt est numérisée, au fil du temps, deux ou plusieurs fois, ou quand sa complexité nécessite un accroissement du nombre de stations de scanner laser fixes. Aussi, en raison de la variété des techniques disponibles d'acquisition, l'intégration multi-données devient une question importante puisqu'elle permet de mettre en cohérence des données contenant souvent une information complé

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Xiangming Dong, Xiangming Dong, Shibing Liu Shibing Liu, Haiying Song Haiying Song, Peng Gu Peng Gu, and Xiaoli Li Xiaoli Li. "Few-layer graphene film fabricated by femtosecond pulse laser deposition without catalytic layers." Chinese Optics Letters 13, no. 2 (2015): 021601–21604. http://dx.doi.org/10.3788/col201513.021601.

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7

Di, Mitri Simone, Ninno Giovanni De, Riccardo Fabris, Simone Spampinati, and Neil Thompson. "Simple and robust free-electron laser doubler." Physical Review Accelerators and Beams 22, no. 10 (2019) (2019): 100701(8). https://doi.org/10.1103/PhysRevAccelBeams.22.100701.

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We present the design of a free-electron laser (FEL) doubler suitable for the simultaneous operation of two FEL lines, in either self-amplified spontaneous emission or externally seeded configuration. The doubler relies on the physical selection of two longitudinal portions (beamlets) of a single electron bunch at a low energy and on their spatial separation at high energy. Since the two beamlets are naturally synchronized, FEL pump–FEL probe experiments are enabled when the two photon pulses are sent to the same experimental station. The proposed solution offers improved flexibility of

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8

Kim, Jae Gyeong, Chung-Soo Kim, Suk-Hee Park, and Jeonghong Ha. "Effect of Angle of Incident on Taper Angle in Femtosecond Laser Machining for Fabrication of Cross Section Analysis Specimen." Korean Journal of Metals and Materials 62, no. 6 (2024): 419–28. http://dx.doi.org/10.3365/kjmm.2024.62.6.419.

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Focused ion beam (FIB) technology is one of the most widely used methods for fabricating crosssectional analysis specimens because of its high precision and characteristics that minimize the occurrence of defects. Demand for large cross-sectional area analysis is increasing to improve product reliability in various industries, but is limited by the low milling speed of FIB. Other potential techniques such as Ar ion milling and plasma FIB have been adopted, but low milling speed for large areas still remains a problem. A promising solution to this issue involves laser machining prior to FIB mil

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Lin Suying, 林素颖, 廖小杰 Liao Xiaojie та 韩冰 Han Bing. "纳秒激光诱导聚酰亚胺薄膜周期性结构的产生". Infrared and Laser Engineering 51, № 2 (2022): 20210911. http://dx.doi.org/10.3788/irla20210911.

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10

Chen, Wenling, Chao Liu, Yuqi Zou, et al. "Flexible omnidirectional reflective film for CO2 laser protection." Chinese Optics Letters 21, no. 2 (2023): 022201. http://dx.doi.org/10.3788/col202321.022201.

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11

van der Meer, A. F. G., and M. J. van der Wiel. "Mid-Ir Fel User Facility Felix." Applied Spectroscopy 51, no. 4 (1997): 574–75. http://dx.doi.org/10.1366/0003702971940620.

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12

Zou, Yixuan. "Principle of Free-electron Laser and Applications in Medical Research and Lithography." Highlights in Science, Engineering and Technology 76 (December 31, 2023): 161–67. http://dx.doi.org/10.54097/0mj84485.

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In recent years, as a breakthrough light source technology, free-electron laser (FEL) has the unique advantage of producing coherent radiation with high brightness, high energy, good directivity and excellent monochromaticity. With this in mind, this study will systematical discuss the historical development of FEL technology, from Einstein's laser theory to Dr. Maiman's first commercial laser, as well as the birth and evolution of FEL. To be specific, the basic principles and construction of FEL technology will be discussed in detail, including key components such as electron sources, electro

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13

Álvarez-Tamayo, Ricardo Iván, and Patricia Prieto-Cortés. "Refractive Index Fiber Laser Sensor by Using a Fiber Ball Lens Interferometer with Adjustable Free Spectral Range." Sensors 23, no. 6 (2023): 3045. http://dx.doi.org/10.3390/s23063045.

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In this work, a fiber laser refractometer based on a fiber ball lens (FBL) interferometer is proposed. The linear cavity erbium-doped fiber laser uses an FBL structure acting as a spectral filter and sensing element for determining the RI of a liquid medium surrounding the fiber. The optical interrogation of the sensor is the wavelength displacement of the generated laser line as a function of the RI variations. For the proposed FBL interferometric filter, the free spectral range of its wavelength-modulated reflection spectrum is adjusted to maximum in order to obtain RI measurements in a rang

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14

Zhenkun Yu, Zhenkun Yu, Hongbo He Hongbo He, Xu Li Xu Li, Hongji Qi Hongji Qi, and Wenwen Liu Wenwen Liu. "Stress mechanism of pulsed laser-driven damage in thin film under nanosecond ultraviolet laser irradiation." Chinese Optics Letters 11, no. 7 (2013): 073101–73102. http://dx.doi.org/10.3788/col201311.073101.

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15

Bonifacio, Rodolfo. "Quantum SASE FEL with laser wiggler." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 546, no. 3 (2005): 634–38. http://dx.doi.org/10.1016/j.nima.2005.04.003.

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16

Vertsanova, Olena, and Benjamin Tordoff. "(Invited) The Laser-Integrated FIB-SEM for Faster 3D Packages Characterization and Failure Analysis." ECS Meeting Abstracts MA2023-02, no. 17 (2023): 1191. http://dx.doi.org/10.1149/ma2023-02171191mtgabs.

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The semiconductor industry is constantly looking for new technologies and materials to provide more functionality and performance in a smaller volume. Modern innovations in the development of 3D advance packaging require new methods of materials research and failure analysis. Three-dimensional multi-level electronic components, whose packages contain a stack of chips and interconnections, require visualization and analysis of undersurface structures withhigh resolution and performance [2]. Modern methods of electron microscopy based on ion beam (FIB-SEM) sample preparation provide a high quali

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17

Mlynczak, Jaroslaw. "Laser toys fail to comply with safety standards – case study based on laser product classification." Advanced Optical Technologies 10, no. 2 (2021): 139–42. http://dx.doi.org/10.1515/aot-2020-0072.

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Abstract The article describes the laser safety classification of a laser toy for children equipped with a laser aimer/illuminator with two radiation sources. Following the rules presented in EN 60825-1: 2014 standard, the tests and measurements of the accessible emission were carried out and the class of the laser product was determined to be 3R. It was shown that the laser toy does not comply with the requirements of the EN 62115: 2020 standard and the Public Health England Guidance. The potential hazards associated with Class 3R, indicated in the EN 60825-1: 2014 standard, are also discusse

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18

Hajima, R., K. Kawase, H. Zen, and H. Ohgaki. "Carrier-envelope phase stabilization in FEL oscillators." Journal of Physics: Conference Series 2687, no. 3 (2024): 032013. http://dx.doi.org/10.1088/1742-6596/2687/3/032013.

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Abstract FEL oscillators can produce few-cycle optical pulses with a high-extraction efficiency when the oscillators are operated in the superradiant regime. Such FEL oscillators are unique light sources to explore intense light field science, especially in mid-infrared and longwave infrared where ultrashort pulses for the high-intensity applications are difficult to produce from conventional lasers. Since the laser-matter interaction in the intense field regime is described in terms of the oscillating electric field rather than the instantaneous intensity, the carrier-envelope phase (CEP) mus

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19

Shang Kaiwen, 尚凯文, 吴敢 Wu Gan, 刘孝丽 Liu Xiaoli, 杨建平 Yang Jianping та 王瑞 Wang Rui. "Tedlar复合材料表面飞秒激光刻蚀铝薄膜技术研究". Chinese Journal of Lasers 48, № 10 (2021): 1002117. http://dx.doi.org/10.3788/cjl202148.1002117.

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20

Wang Wei, 王蔚, 纪向城 Ji Xiangcheng, 刘伟军 Liu Weijun, 邢飞 Xing Fei та 卞宏友 Bian Hongyou. "5083铝合金阳极氧化膜激光清洗工艺研究". Chinese Journal of Lasers 50, № 4 (2023): 0402018. http://dx.doi.org/10.3788/cjl220793.

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21

HUANG Jiaxu, 黄佳旭, 李峻 LI Jun, 邱佩 QIU Pei та 徐少林 XU Shaolin. "激光诱导薄膜材料二维图案化纳米加工技术（特邀）". ACTA PHOTONICA SINICA 52, № 7 (2023): 0752302. http://dx.doi.org/10.3788/gzxb20235207.0752302.

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22

ALESINI, D., S. BERTOLUCCI, M. E. BIAGINI, et al. "The SPARC/X SASE-FEL Projects." Laser and Particle Beams 22, no. 3 (2004): 341–50. http://dx.doi.org/10.1017/s0263034604223199.

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SPARC and SPARX are two different initiatives toward an ItalianFreeElectronLaser (FEL) source operating in theSelfAmplifiedSpontaneousEmission (SASE) mode, in which several national research institutions are involved. SPARC is a high gain FEL project devoted to provide a source of visible and VUV radiation while exploiting the SASE mechanism. An advanced Photo-Injector system, emittance compensating RF-gun plus a 150 MeV Linac, will inject a high quality e-beam into the undulator to generate high brilliance FEL radiation in the visible region at the fundamental wavelength, (∼500 nm). The produ

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Will, Ingo, Horst I. Templin, Siegfried Schreiber, and Wolfgang Sandner. "Photoinjector drive laser of the FLASH FEL." Optics Express 19, no. 24 (2011): 23770. http://dx.doi.org/10.1364/oe.19.023770.

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Ogino, S., H. Shiomi, N. Fujimori, K. Awazu, and Y. Maeda. "Free electron laser (FEL) annealing of diamond." Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 144, no. 1-4 (1998): 181–85. http://dx.doi.org/10.1016/s0168-583x(98)00356-5.

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25

Zolotorev, M. "Laser driven attosecond SASE X-ray FEL." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 483, no. 1-2 (2002): 445–48. http://dx.doi.org/10.1016/s0168-9002(02)00359-5.

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Early, J., J. Barton, G. Busch, R. Wenzel, and D. Remelius. "The Los Alamos FEL photoinjector drive laser." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 318, no. 1-3 (1992): 381–88. http://dx.doi.org/10.1016/0168-9002(92)91086-o.

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Early, J., J. Barton, R. Wenzel, D. Remelius, and G. Busch. "The Los Alamos FEL photoinjector drive laser." IEEE Journal of Quantum Electronics 27, no. 12 (1991): 2644–49. http://dx.doi.org/10.1109/3.104144.

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Meister, Severin, Hannes Lindenblatt, Florian Trost, et al. "Atomic, Molecular and Cluster Science with the Reaction Microscope Endstation at FLASH2." Applied Sciences 10, no. 8 (2020): 2953. http://dx.doi.org/10.3390/app10082953.

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The reaction microscope (REMI) endstation for atomic and molecular science at the free-electron laser FLASH2 at DESY in Hamburg is presented together with a brief overview of results recently obtained. The REMI allows coincident detection of electrons and ions that emerge from atomic or molecular fragmentation reactions in the focus of the extreme-ultraviolet (XUV) free-electron laser (FEL) beam. A large variety of target species ranging from atoms and molecules to small clusters can be injected with a supersonic gas-jet into the FEL focus. Their ionization and fragmentation dynamics can be st

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MARSI, M., A. LOCATELLI, M. TROVÒ, et al. "UV/VUV FREE ELECTRON LASER OSCILLATORS AND APPLICATIONS IN MATERIALS SCIENCE." Surface Review and Letters 09, no. 01 (2002): 599–607. http://dx.doi.org/10.1142/s0218625x02001768.

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After having reached the status of user facilities in the infrared, Free Electron Laser (FEL) oscillators are becoming interesting light sources for scientific research also in the UV/VUV wavelength region. Thanks to continuous advances in accelerator and mirror technology, it has been possible to reach with tunability energies which are hardly accessible with conventional lasers (the European FEL project at Elettra recently lased below 190 nm), with the realistic perspective of reaching even shorter wavelengths in the near future. Thanks to their unique properties, such as tunability, full co

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Mincigrucci, Riccardo, Filippo Bencivenga, Emiliano Principi, et al. "Timing methodologies and studies at the FERMI free-electron laser." Journal of Synchrotron Radiation 25, no. 1 (2018): 44–51. http://dx.doi.org/10.1107/s1600577517016368.

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Time-resolved investigations have begun a new era of chemistry and physics, enabling the monitoring in real time of the dynamics of chemical reactions and matter. Induced transient optical absorption is a basic ultrafast electronic effect, originated by a partial depletion of the valence band, that can be triggered by exposing insulators and semiconductors to sub-picosecond extreme-ultraviolet pulses. Besides its scientific and fundamental implications, this process is very important as it is routinely applied in free-electron laser (FEL) facilities to achieve the temporal superposition betwee

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Xin, Long, Yongming Han, Ligong Ling, Weidong Zhang, Yonghao Lu, and Tetsuo Shoji. "The Evolution of Fretting Wear Behavior and Damage Mechanism in Alloy 690TT with Cycle Number." Materials 13, no. 10 (2020): 2417. http://dx.doi.org/10.3390/ma13102417.

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The evolution of fretting wear behavior and damage mechanism in Alloy 690TT with cycle number was investigated via laser scanning confocal microscopy (LSCM), scanning electron microscopy (SEM), focus ion beam (FIB), and transmission electron microscopy (TEM). The results showed that the fretting running status underwent a transition from partial slip and mixed stick-slip to final gross slip with the transformation of Ft–D curves from the ellipse to the parallelogram. The coefficient of friction (COF) experienced three drops throughout the fretting process, which indicated the transformation fr

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Wang, Xiaofan, Chao Feng, Bart Faatz, Weiqing Zhang, and Zhentang Zhao. "High-repetition-rate seeded free-electron laser with direct-amplification of an external coherent laser." New Journal of Physics 24, no. 3 (2022): 033013. http://dx.doi.org/10.1088/1367-2630/ac5492.

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Abstract Various scientific and industrial researches such as spectroscopy and advanced nano-technologies have been demanding high flux and fully coherent extreme ultraviolet (EUV) and x-ray radiation. These demands can be commendably satisfied with a MHz-level repetition-rate seeded free-electron laser (FEL). Dictated by the seed laser system, seeded FELs have faced obstacles for the realization of MHz repetition rate. Reducing the required peak power of an external coherent seed laser can effectively increase the repetition rate of a seeded FEL. This paper presents a novel technique that emp

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Chen Liang, 陈亮, та 苏亚辉 Su Yahui. "基于飞秒激光制备的雾水收集驼峰双面神膜". Laser & Optoelectronics Progress 59, № 3 (2022): 0314003. http://dx.doi.org/10.3788/lop202259.0314003.

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Ma Bin, 马彬, 韩佳岐 Han Jiaqi, 王可 Wang Ke, 黄秋实 Huang Qiushi, 焦宏飞 Jiao Hongfei та 管爽 Guan Shuang. "纳秒脉冲激光诱导的金属膜喷发的分布特征". Infrared and Laser Engineering 50, № 11 (2021): 20210036. http://dx.doi.org/10.3788/irla20210036.

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35

Geiler, Jan Niklas, Roman Grzeszik, Sebastian Quaing, Andreas Manz, and Sebastian Arnold Kaiser. "Development of laser-induced fluorescence to quantify in-cylinder fuel wall films." International Journal of Engine Research 19, no. 1 (2017): 134–47. https://doi.org/10.1177/1468087417733865.

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Laser-induced fluorescence of a fuel tracer is a very sensitive technique to image in-cylinder liquid fuel films, but quantification of the measured film thickness has proven difficult so far. This article describes improvements in the quantification procedure and presents an example application in a motored, optically accessible spark-ignition engine with direct injection. We designed a calibration tool that could be pressurized and heated, allowing investigation of the laser-induced fluorescence intensities at temperatures exceeding the liquid’s standard-pressure boiling point. The flu

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Nakajima, Y., K. Iwatsuki, K. Ishii, T. Fujinaka, K. Awazu, and T. Yoshimine. "Development of an Intravascular Laser Treatment with an Infrared Free Electron Laser." Interventional Neuroradiology 10, no. 1_suppl (2004): 67–69. http://dx.doi.org/10.1177/15910199040100s109.

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We have studied to develop an intravascular device with an infrared free electron laser (FEL) to treat occlusive carotid atherosclerotic lesions. In this study, we irradiated the FEL with a wavelength of 5.75 μm on surgical specimens of human atheromatous carotid plaques. After the irradiation on a cholesterol-ester-accumulated portion of the carotid plaques under proper conditions, a microscope transmission FTIR (Fourier Transform Infrared) spectroscopy showed that the peak of a tissue infrared absorption spectrum corresponding to the molecular vibration of cholesterol ester (5.75 μm) disappe

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Xia, M., N. Yang, Y. Xu, Z. Zhao, and H. Li. "Design of a megawatt superradiant terahertz source for FELiChEM." Journal of Instrumentation 18, no. 02 (2023): P02019. http://dx.doi.org/10.1088/1748-0221/18/02/p02019.

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Abstract FELiChEM is an infrared free electron laser user facility built at the University of Science and Technology of China (USTC). It consists of two free electron laser oscillators which produce mid-infrared and far-infrared lasers covering the spectral range of 2–200 μm at current stage. In this paper, we propose a new operation mode of a megawatt (MW) terahertz (THz) superradiance free electron laser (FEL) for FELiChEM. Start-to-end (S2E) simulations have been carried out, in which the three-dimension particle-in-cell (PIC) code PUFFIN is used for the generation of the THz superradiance.

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Owada, Shigeki, Kazuaki Togawa, Takahiro Inagaki, et al. "A soft X-ray free-electron laser beamline at SACLA: the light source, photon beamline and experimental station." Journal of Synchrotron Radiation 25, no. 1 (2018): 282–88. http://dx.doi.org/10.1107/s1600577517015685.

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The design and performance of a soft X-ray free-electron laser (FEL) beamline of the SPring-8 Compact free-electron LAser (SACLA) are described. The SPring-8 Compact SASE Source test accelerator, a prototype machine of SACLA, was relocated to the SACLA undulator hall for dedicated use for the soft X-ray FEL beamline. Since the accelerator is operated independently of the SACLA main linac that drives the two hard X-ray beamlines, it is possible to produce both soft and hard X-ray FEL simultaneously. The FEL pulse energy reached 110 µJ at a wavelength of 12.4 nm (i.e.photon energy of 100 eV) wit

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Sato, Isamu. "New Light: What is Free Electron Laser FEL?" Journal of Hard Tissue Biology 14, no. 2 (2005): 88–89. http://dx.doi.org/10.2485/jhtb.14.88.

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Pantell, R. H. "Comparisons between the FEL and the conventional laser." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 304, no. 1-3 (1991): 798–803. http://dx.doi.org/10.1016/0168-9002(91)90980-5.

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41

Hill, R. A., Q. Ren, D. C. Nguyen, L. H. Liaw, and M. W. Berns. "Free-Electron Laser (FEL) Ablation of Ocular Tissues." Lasers in Medical Science 13, no. 3 (1998): 219–26. http://dx.doi.org/10.1007/s101030050078.

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Berryman, K. W., P. Haar, and B. A. Richman. "FEL cavity length measurement with an external laser." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 358, no. 1-3 (1995): 260–63. http://dx.doi.org/10.1016/0168-9002(94)01287-3.

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Qin, Weilun, Francesca Curbis, Joel Andersson, et al. "The FEL in the SXL project at MAX IV." Journal of Synchrotron Radiation 28, no. 3 (2021): 707–17. http://dx.doi.org/10.1107/s1600577521003465.

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In this paper the design of the free-electron laser (FEL) in the SXL (Soft X-ray Laser) project at the MAX IV Laboratory is presented. The target performance parameters originate in a science case put forward by Swedish users and the SXL FEL is foreseen to be driven by the existing MAX IV 3 GeV linac. The SXL project is planned to be realized in different stages and in this paper the focus is on Phase 1, where the basic operation mode for the FEL will be SASE (self-amplified spontaneous emission), with an emphasis on short pulses. Simulation results for two linac bunches (high and low charge)

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Sharma, Jyotsna, Suresh C. Sharma, Anuradha Bhasin, and V. K. Jain. "A local theory of effect of beam pre-modulation on gain and efficiency in a surface wave pumped free electron laser." International Journal of Modern Physics: Conference Series 32 (January 2014): 1460351. http://dx.doi.org/10.1142/s2010194514603512.

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A pre-modulated relativistic electron beam (REB) counter propagating to the surface wave in the vacuum region Compton backscatters the surface wave into a high frequency radiation. The surface wave extends into the vacuum region and can be employed as a wiggler for the generation of sub-millimeter waves. The growth rate and gain were evaluated for a typical FEL (Free Electron Laser) parameters and It is found that the growth rate and gain of the surface wave pumped free electron laser increases with the modulation index. Moreover, the growth rate of the FEL (Free electron Laser) instability sc

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MARAGHECHI, B., M. JOKAR, F. JAFARI BAHMAN, and A. NAEIMABADI. "Three-dimensional and nonlinear analysis of efficiency enhancement in the E × B drifting electron laser with a prebunched electron beam and a planar wiggler." Journal of Plasma Physics 79, no. 5 (2013): 739–49. http://dx.doi.org/10.1017/s0022377813000378.

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AbstractA nonlinear simulation of the E × B drifting electron laser (DEL) and the free-electron laser (FEL), in three dimensions, is presented for a prebunched electron beam to study efficiency enhancement. For the planar wiggler with flat pole faces, prebunching considerably shortens the saturation length, which favors the DEL compared to the FEL. Operation of the DEL with the planar wiggler with parabolic pole faces was not found to be possible due to the modulation of the E × B drift by the wiggler. However, simulation results of the FEL with this type of wiggler are reported.

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46

Salimon, Igor A., Sakellaris Mailis, Alexey I. Salimon, et al. "FIB-SEM Investigation of Laser-Induced Periodic Surface Structures and Conical Surface Microstructures on D16T (AA2024-T4) Alloy." Metals 10, no. 1 (2020): 144. http://dx.doi.org/10.3390/met10010144.

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The use of aluminum alloy AA2024-T4 (Russian designation D16T) in applications requiring a high strength-to-weight ratio and fatigue resistance such as aircraft fuselage often demands the control and modification of surface properties. A promising route to surface conditioning of Al alloys is laser treatment. In the present work, the formation of ripples and conical microstructures under scanning with femtosecond (fs) laser pulses was investigated. Laser treatment was performed using 250 fs pulses of a 1033 nm Yb:YAG laser. The fluence of the pulses varied from 5 to 33 J/cm2. The scanning was

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Owada, Shigeki, Kyo Nakajima, Tadashi Togashi, Tetsuo Kayatama, and Makina Yabashi. "Single-shot arrival timing diagnostics for a soft X-ray free-electron laser beamline at SACLA." Journal of Synchrotron Radiation 25, no. 1 (2018): 68–71. http://dx.doi.org/10.1107/s1600577517015284.

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Arrival timing diagnostics performed at a soft X-ray free-electron laser (FEL) beamline of SACLA are described. Intense soft X-ray FEL pulses with one-dimensional focusing efficiently induce transient changes of optical reflectivity on the surface of GaAs. The arrival timing between soft X-ray FEL and optical laser pulses was successfully measured as a spatial position of the reflectivity change. The temporal resolution evaluated from the imaging system reaches ∼10 fs. This method requires only a small portion of the incident pulse energy, which enables the simultaneous operation of the arriva

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Zhu, Yiran, Yuan Zhou, Zhe Wang, et al. "Electro-optically tunable microdisk laser on Er3+-doped lithium niobate thin film." Chinese Optics Letters 20, no. 1 (2022): 011303. http://dx.doi.org/10.3788/col202220.011303.

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Cui Yun, 崔云, 张革 Zhang Ge, 赵元安 Zhao Yuanan та ін. "激光薄膜元件内微缺陷的表征分析". Chinese Journal of Lasers 50, № 2 (2023): 0203101. http://dx.doi.org/10.3788/cjl220568.

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Zhao Rui, 赵瑞, 石琳琳 Shi Linlin, 王越 Wang Yue, 李岩 Li Yan, 邹永刚 Zou Yonggang та 马晓辉 Ma Xiaohui. "多单管激光器微通道内部翅片结构设计及优化". Laser & Optoelectronics Progress 60, № 21 (2023): 2114005. http://dx.doi.org/10.3788/lop222711.

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