Relevant bibliographies by topics / Open and closed aperture Z scan

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Academic literature on the topic 'Open and closed aperture Z scan'

Author: Grafiati
Published: 2 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Open and closed aperture Z scan"

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Edziah, Raymond. "High Repetition-Rate Laser Z-Scan Measurements: Criterion for Recognizing Adverse Thermal Effects." Applied Physics Research 11, no. 2 (2019): 73. http://dx.doi.org/10.5539/apr.v11n2p73.

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This study reports z-scan measurements in which high-repetition-rate and reduced repetition-rate (pulse-picked) laser beams were employed using a standard sample, carbon disulfide (CS2) contained in supposedly high damage-threshold spectroscopic-grade pristine fused-quartz cuvettes. The results suggest that at reduced repetition rates, the closed aperture z-scan profile for CS2 displays the expected configuration. However, at high repetition-rates the closed aperture z-scans are distinctly different resulting in unexpectedly large nonlinear refractive index of CS2 due to thermal effects that r
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Nguyen, Lam Thanh, Nghia Tran Hong, Cam Tu Bui Thi, and Anh Quynh Le. "The numerical methods for analyzing the Z-scan data." Journal of Nonlinear Optical Physics & Materials 23, no. 02 (2014): 1450020. http://dx.doi.org/10.1142/s0218863514500209.

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In this paper, we are dedicated to exemplifying a two parameter curve fitting method and developing a Matlab-based simulation program to extract the nonlinear refractive index and nonlinear absorption coefficient from closed-aperture Z-scan or R(z) data without the need for performing open-aperture Z-scan measurement. It should be noted, however, that both approaches can only be applicable to a case for which the on-axis phase shift at the focus is small. In this way, we not only determine the nonlinear parameters quickly with reasonable accuracy, as well as save time, efforts and equipment in
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Hadi, Mahasin F., Eman Mohi Alwaan, and Wafaa Hameed Abass. "Nonlinear Optical Characteristics of Crystal VioletDye Doped Polystyrene Films by Using Z-Scan Technique." Al-Mustansiriyah Journal of Science 27, no. 5 (2017): 83. http://dx.doi.org/10.23851/mjs.v27i5.172.

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Z-scan technique was employed to study the nonlinear optical properties (nonlinear refractive index and nonlinear absorption coefficient) for crystal violet doped polystyrene films as a function of doping ratio in chloroform solvent. Samples exhibits in closed aperture Z-scan positive nonlinear refraction (self-focusing). While in the open aperture Z-scan gives reverse saturation absorption (RSA) (positive absorption) for all film with different doping ratio making samples candidates for optical limiting devices for protection of sensors and eyes from energetic laser light pulses under the exp
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Liu, Xiangming, and Yasuo Tomita. "Closed-Aperture Z-Scan Analysis for Nonlinear Media with Saturable Absorption and Simultaneous Third- and Fifth-Order Nonlinear Refraction." Physics Research International 2012 (August 7, 2012): 1–9. http://dx.doi.org/10.1155/2012/161572.

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We present a theory of open- and closed-aperture Gaussian beam Z-scan for nonlinear optical materials with saturable absorption and high-order nonlinear refraction. We show that an approximate expression for a transmitted intensity through the nonlinear optical material is possible by means of the Adomian’s decomposition method and the thin film approximation. The theory is applied to semiconductor CdSe quantum dot-polymer nanocomposite films. It is shown that the theory well explains measured results of open- and closed-aperture transmittances in the Z-scan setup. It is also shown that the na
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GUO, SHENG-LI, LI XU, JUN YAN, HUI-TIAN WANG, XIAO-ZENG YOU, and N. B. MING. "AN ACCURATE METHOD FOR EXTRACTING NONLINEAR REFRACTION BY Z-SCAN TECHNIQUE IN THE PRESENCE OF NONLINEAR ABSORPTION." Journal of Nonlinear Optical Physics & Materials 12, no. 03 (2003): 307–15. http://dx.doi.org/10.1142/s0218863503001481.

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We suggest an accurate method for extracting nonlinear refraction from the closed aperture Z-scan transmittance curve with the aid of the open aperture Z-scan transmittance curve; this method possesses very high accuracy, especially, in the presence of nonlinear absorption and/or for the larger linear transmittance of the aperture. The relative error of the results given by our method is only weakly dependent on the intensity of the incident light; which is a significant advantage over other methods. This method is also demonstrated experimentally on a solution of Ni(mpo) 2 complex.
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GUO, SHENG-LI, HUI-TIAN WANG, N. B. MING, JUN-YONG ZHANG, and ZHI-JIAN GUO. "INVESTIGATION OF NEAR TWO-PHOTON RESONANCE OPTICAL NONLINEARITIES IN Ni(Ac)2[N-(8-QUINOLYL) PYRIDINE-2-CARBOXAMIDE] · 4H2O BY THE Z-SCAN TECHNIQUE." Journal of Nonlinear Optical Physics & Materials 12, no. 01 (2003): 81–89. http://dx.doi.org/10.1142/s0218863503001225.

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We describe a modified Z-scan technique for the case when nonlinear refraction is accompanied by nonlinear absorption to separately evaluate the nonlinear refraction and the nonlinear absorption by performing straightforward measurements with the aperture removed. We divide the closed aperture (S < 1) normalized Z-scan by a scan with an open aperture (S = 1). With nanosecond scale at a 532 nm wavelength, we first measured the nonlinear optical absorption and refraction coefficients of a solution of Ni(Ac)2[N-(8-quinolyl) pyridine-2-carboxamide] · 4H2O by using the modified Z-scan technique.
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Nader, Rajaa, Slafa I. Ibrahim Ibrahim, and Ali H. Al-Hamdani. "Linear and Nonlinear Optical Properties of Anthocyanin Dye from Red Cabbage in Different pH Solutions." Baghdad Science Journal 20, no. 3(Suppl.) (2023): 1131. http://dx.doi.org/10.21123/bsj.2023.7461.

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This article studied some linear and nonlinear optical characteristics of different pH solutions from anthocyanin dye extract at 180 oC from red cabbage. First, the linear spectral characteristics, including absorption and transmittance in the range 400-800 nm for anthocyanin solution 5% v/v with different pHs, were achieved utilizing a UV/VIS spectrophotometer. The experimental results reveal a shift in the absorption toward the longer wavelength direction as pH values increment. Then, the nonlinear features were measured using the Z-scan technique with a CW 532 nm laser to measure the nonlin
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NOORALDEEN, AHMAD Y., A. N. DHINAA, and P. K. PALANISAMY. "NONLINEAR OPTICAL PROPERTIES OF ACID ORANGE 10 DYE BY Z-SCAN TECHNIQUE USINGAr+LASER." Journal of Nonlinear Optical Physics & Materials 16, no. 03 (2007): 359–66. http://dx.doi.org/10.1142/s0218863507003743.

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Nonlinear optical (NLO) properties of the aqueous solution of Acid Orange 10 dye have been studied using the closed aperture and open aperture Z-scan technique at different concentrations and various powers of Ar+laser at 488 nm wavelength. The nonlinear refractive index (n2) shows negative nonlinearity for all concentrations studied, and it is measured to be -13.5 × 10-9cm2/ W at 0.05 mM concentration. Moreover, the nonlinear refractive index is found to vary with intensity and concentration. The nonlinear absorption coefficient (β) is measured to be -3.8 × 10-4cm/W . Optical limiting behavio
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Hamad, Syed, Surya P. Tewari, L. Giribabu, and S. Venugopal Rao. "Picosecond and femtosecond optical nonlinearities of novel corroles." Journal of Porphyrins and Phthalocyanines 16, no. 01 (2012): 140–48. http://dx.doi.org/10.1142/s108842461200446x.

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We present our results from the experimental and modeling studies of picosecond (ps) and femtosecond (fs) nonlinearities of two novel corroles (a) tritolyl corrole (TTC) (b) triphenyl corrole (TPC) using the Z-scan technique. Both open and closed aperture Z-scan curves were recorded with ~2 ps/~40 fs laser pulses at a wavelength of 800 nm and nonlinear optical coefficients were extracted for both studies. Both the molecules possessed negative nonlinear refractive index (n2) as revealed by signature of the closed aperture data in both (ps and fs) time domains. Picosecond nonlinear absorption da
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Hussein, Mohammed T., and Reem R. Mohammed. "Study the Nonlinearity Characteristics of Organic-Semiconductor (CuPc) Prepared Via Pulsed Laser Deposition Technique with Different Thickness." Nano Hybrids and Composites 27 (November 2019): 11–20. http://dx.doi.org/10.4028/www.scientific.net/nhc.27.11.

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The optical absorption spectrum, Photoluminesces, and non-linear optical properties for Copper Phthalocyanine (CuPc) thin films (150,300 and 450 nm) respectively have been investigated via pulsed laser deposition technique. The absorption spectrum indicted that there are two bands one in UV around 330 nm which called B-band and the second in Visible around 650nm which called Q-band. Photoluminescence spectrum related to deposit samples has been determined with different thicknesses. From closed and open aperture Z-scan data non-linear absorption coefficient and non-linear refractive index have
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Book chapters on the topic "Open and closed aperture Z scan"

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Bairy, Raghavendra, Vijeth H., Rajesh K., and Rohan S. Deshmukh. "Synthesis and Characterization of CdS and ZnS Nanostructured Thin Films for Opto-electronic Energy Applications." In Thin Film Nanomaterials: Synthesis, Properties and Innovative Energy Applications. BENTHAM SCIENCE PUBLISHERS, 2024. http://dx.doi.org/10.2174/9789815256086124010004.

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Since their early discovery, thin films have quickly found industrial uses, including decorative, optical, and energy storage applications. The range of applications for thin film technology has expanded to the point where nearly every industrial sector now uses it to impart specific physical and chemical properties to the surface of bulk materials. The ability to customize film properties by varying the microstructure through the deposition parameters used in a particular deposition technique has recently allowed them to advance from the most basic applications, like protective coatings again
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Sreeja, V. G., R. Reshmi, and E. I. Anila. "Open Aperture Z - Scan Studies of Spin Coated Graphite Oxide Thin Film." In New Frontiers in Physical Science Research Vol. 9. B P International (a part of SCIENCEDOMAIN International), 2023. http://dx.doi.org/10.9734/bpi/nfpsr/v9/18270d.

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Conference papers on the topic "Open and closed aperture Z scan"

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Razzari, Luca, Fuhai Su, Gargi Sharma, et al. "Terahertz Open-Aperture Z-Scan in Doped InGaAs." In International Quantum Electronics Conference. OSA, 2009. http://dx.doi.org/10.1364/iqec.2009.imh7.

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Das, Ritwick, and Mukesh Kumar Shukla. "Measurement of nonlinear refractive index in open aperture Z-scan." In 2013 Workshop on Recent Advances in Photonics (WRAP). IEEE, 2013. http://dx.doi.org/10.1109/wrap.2013.6917702.

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Krishnan, Shiji, C. S. Suchand Sandeep, Reji Philip, et al. "The Open Aperture Z-Scan Studies on Biferroic YCrO[sub 3]." In SOLID STATE PHYSICS, PROCEEDINGS OF THE 55TH DAE SOLID STATE PHYSICS SYMPOSIUM 2010. AIP, 2011. http://dx.doi.org/10.1063/1.3606333.

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Sharma, Ankit, Mansi Pathak, C. S. Rout, and K. V. Adarsh. "Nonlinear Optical Response of Jahn-Teller Susceptible Mixed Transition Metal Oxide." In JSAP-Optica Joint Symposia. Optica Publishing Group, 2023. http://dx.doi.org/10.1364/jsapo.2023.21a_p01_2.

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The sustainability of optical nonlinearities of material systems is crucial for future technological and fundamental importance e.g., optical switching, signal processing, second harmonic generation, solar energy harvesting, optical limiting, frequency-comb, etc. In the last four decades, extensive works had been dedicated to advances in the nonlinear optics field but still, we rely on metal chalcogenides, LiNbO3, BBO, etc. as a nonlinear crystal for technological applications. However, several groups have demonstrated different materials systems with relatively enhanced optical nonlinearities
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Kaur, Gurpreet, Pengyu Han, and X. C. Zhang. "Terahertz induced nonlinear effects in doped Silicon observed by open-aperture Z-scan." In 2010 35th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2010). IEEE, 2010. http://dx.doi.org/10.1109/icimw.2010.5613068.

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Sreeja, V. G., Ajina Cheruvalathu, R. Reshmi, Sebin Devasia, and E. I. Anila. "Nonlinear optical characterization of graphite oxide thin film by open aperture Z-scan technique." In DAE SOLID STATE PHYSICS SYMPOSIUM 2015. Author(s), 2016. http://dx.doi.org/10.1063/1.4947901.

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Cha, Hyesun, and Yoonchan Jeong. "Numerical study on the distortions in the closed-aperture z-scan data due to the spherical aberration of the focusing lens." In Laser Applications to Chemical, Security and Environmental Analysis. Optica Publishing Group, 2022. http://dx.doi.org/10.1364/lacsea.2022.lm1b.6.

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In this research, the aberration effect of a focusing lens in the analysis of z-scan data is qualitatively examined. As the numerical aperture increases, the intensity profile before and after the focal point is distributed asymmetrically, distorting the z-scan data.
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Marcano, A., O. F. E. Hernández, and Varid H. Maillotte. "Sensitivity enhancement of the nonlinear refraction measurements with the open Z-scan by digital image processing." In The European Conference on Lasers and Electro-Optics. Optica Publishing Group, 1996. http://dx.doi.org/10.1364/cleo_europe.1996.cthj2.

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The Z-scan(1) method is a well known simple and sensitive technique for measuring nonlinearities in bulk materials. A typical peak-valley transmittance curve is obtained from which it is easy to measure the nonlinear refraction (and/or absorption) coefficient of the material with a good sensitivity A modification of the technique, the Eclipsing Z-scan(2) (EZ-scan), where a disk is used instead of circular aperture has been also developed. It has been shown that the latter method is more sensitive, due to the fact that the relative changes of the transmitted power are larger than in the usual Z
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Sharma, Ankit, Pravrati Taank, Rajesh Kumar Yadav, and K. V. Adarsh. "Ultrafast Saturable Absorber in Controlled MoS2/WS2 Heterostructure." In Frontiers in Optics. Optica Publishing Group, 2022. http://dx.doi.org/10.1364/fio.2022.jw5b.25.

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We studied nonlinear optical properties of dispersed MoS2/WS2 heterostructure with controlled concentration by using an ultrafast open-aperture Z-scan. Our studies revealed an equal-concentration of heterostructure shows a better response in stark contrast with other compositions.
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Vincelette, Rebecca L., Robert J. Thomas, Benjamin A. Rockwell, and Ashley J. Welch. "A comparison of a first-order thermal lensing model to a closed aperture Z-scan for the propagation of light in ocular media." In Biomedical Optics 2006, edited by Steven L. Jacques and William P. Roach. SPIE, 2006. http://dx.doi.org/10.1117/12.645445.

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