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Z-scan of ITO nanocrystals grown inside glass
Optics LettersIndium tin oxide (ITO) nanocrystals 1–10 nm in size were grown via thermal treatment of a boroaluminosilicate parent glass. The nonlinear behavior of the obtained glass-ceramic was investigated with the Z-scan technique using 550 ps pulses of a 532 nm source at a 500 Hz repetition rate. The nonlinear response was rich, with the sample exhibiting third-
Amir Ashjari +2 more
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Z-scan formula for saturable Kerr media
Optics Communications, 1999A Z-scan expression is derived for materials with a saturable Kerr index nonlinearity. An approximate solution is obtained for the normalized transmittance. Numerical calculations are given using this formula at near saturation light intensity.
S. Bian, M. Martinelli, R.J. Horowicz
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Heterodyne Z-scan measurements of slow absorbers
Journal of Applied Physics, 2007We report a single-beam heterodyne Z-scan method capable of measuring slow response nonlinear refraction of absorbers with excellent sensitivity. By imposing a small sinusoidal modulation on the incoming continuous wave laser beam and recording both the magnitude and phase of the intensity transmitted through a small aperture, we are able to eliminate ...
I. Guedes +3 more
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Z-scan formula for two-level atoms
Optics Communications, 2004An analytical expression for the Z-scan signal from two-level atoms which show a saturable dispersive and absorptive nonlinearity is derived. An approximate solution is obtained for the normalized transmittance and compared with numerical calculations.
Yingxue Wang, M. Saffman
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The numerical methods for analyzing the Z-scan data
Journal of Nonlinear Optical Physics & Materials, 2014In 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
Lam Thanh Nguyen +3 more
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Effects of beam ellipticity on Z-scan measurements
Journal of the Optical Society of America B, 1996We report an investigation of the popular Z-scan technique for elliptical Gaussian beams. A thin lens wave optics theory is developed for such a beam by generalizing the existing theory for circular Gaussian beams. We find that the Z-scan signature is greatly influenced by two parameters, namely, the ellipticity of the input beam and the waist ...
S. M. Mian, B. Taheri, J. P. Wicksted
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Z-scan Measurement of the Upconversion Coefficient in Er:YAG
2009Abstract : Solid-state laser research at the U.S. Army Research Laboratory (ARL) is currently emphasizing techniques for power scaling and achieving wavelengths in the eye-safer spectral region. We are studying erbium-doped yttrium aluminum garnet (Er:YAG), because it can be operated with a low quantum defect and has transitions around 1.6 micrometers.
John E. McElhenny +3 more
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Microstructural and Z-scan measurement of silver nanoparticles
Applied Surface Science, 2015Abstract Silver nanoflowers were synthesized by the hydrothermal route. Formation of Ag nanoparticles is confirmed from the UV–vis spectrum where the surface plasmon absorption maxima are observed at 415–454 nm. FE-SEM and TEM images revealed the formation of silver nanoflowers and the flower-like silver nanostructures are estimated using ...
R. Sivakami, S. Dhanuskodi
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Accounting for experimental artifacts in the z-scan
13th International Conference on Fiber Optics and Photonics, 2016Srinivasa Rao R. Allam, Alok Sharan
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An Adaptive Down-Sampling Method of Laser Scan Data for Scan-to-BIM
Automation in Construction, 2022Ziwen Liu, Jingjing Guo, Qi Qiu
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