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Z-scan technique: a review from conventional Z-scan to white light Z-scan
Applied Physics BNonlinear (NL) absorption and refraction are crucial optical phenomena in the development and application of optical materials. The Z-scan technique, first proposed by Bahae, is widely used to accurately measure the coefficients of NL absorption and ...
Aliasghar Ajami +3 more
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Z-scan and eclipsing Z-scan analytical expressions for third-order optical nonlinearities
Journal of the Optical Society of America B, 2020Analytical expressions for Gaussian-beam Z-scan and eclipsing Z-scan signals are obtained in a unified format in the case of third-order optical nonlinearities. Considering optically thin media in the presence of both nonlinear refraction and nonlinear absorption, the Gaussian decomposition method is applied to express the normalized transmittance ...
Magnus K. Pereira, Ricardo R. B. Correia
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Advanced Solid State Lasers, 2015
The Luminescence Z-scan technique is introduced for the determination of the pump saturation intensities and up-conversion losses. Results are presented for Cr3+:Al2O3, Cr3+:YAG and Nd3+:YAG.
T. A. Vieira +4 more
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The Luminescence Z-scan technique is introduced for the determination of the pump saturation intensities and up-conversion losses. Results are presented for Cr3+:Al2O3, Cr3+:YAG and Nd3+:YAG.
T. A. Vieira +4 more
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Investigation of tetrabenzporphyrin by the Z-scan technique
Optics Letters, 1995The nonlinear transmission of tetrabenzporphyrin dissolved in tetrahydrofuran was measured with the Z-scan technique at 532 nm with nanosecond pulses. The excited-state absorption cross section, the excited-state refractive-index cross section, and the linear and nonlinear absorption contributing to a thermal index change have been determined.
G L, Wood, M J, Miller, A G, Mott
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CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference, 2009
A novel Z-scan theory based on the solution of the nonlinear paraxial wave equation, completed by the Huygens–Fresnel principle is introduced. This theory is valid for the general case, i.e. for thick samples and large nonlinearities including both nonlinear refraction and absorption.
L. Pálfalvi +4 more
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A novel Z-scan theory based on the solution of the nonlinear paraxial wave equation, completed by the Huygens–Fresnel principle is introduced. This theory is valid for the general case, i.e. for thick samples and large nonlinearities including both nonlinear refraction and absorption.
L. Pálfalvi +4 more
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Single-beam differential z-scan technique
Applied Optics, 2007We report a single-beam, differential z-scan technique with improved sensitivity for the determination of nonlinear absorption and refraction of materials. A sample is scanned in the direction of beam propagation as usual, but, in addition, its longitudinal position is dithered, producing a detector signal proportional to the spatial derivative of only
Jean-Michel, Ménard +3 more
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Saturation Effects in Z-Scan Measurements
Japanese Journal of Applied Physics, 1996We investigate the behavior of the Z-scan technique in the case where the phase of the electric field departs from a Gaussian due to the saturation of the optical nonlinearity. The usual Gaussian decomposition theoretical approach cannot describe experimental results obtained with well-characterized chromium-doped saturable absorbers: ruby
Luimar C. Oliveira +2 more
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Focus introduction: Z-scan technique
Optik, 2017Abstract Since the introduction of the Z-scan, which is widely used to measure the nonlinear optical properties of material. The result of measurement mainly depends on light through the sample after a slight variation in the intensity, and the tiny change depends on the accuracy of the measurement sensitivity of Z-scan technology. Measurement scheme
Cheng-Bao Yao, Ke-Xin Zhang, Xing Wen
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Z-scan studies on porphyrin derivative
Applied Physics B: Lasers and Optics, 1997The nonlinear optical properties of a porphyrin derivative (T 3,4, BCEMPP) doped in boric acid glass were probed using the Z-scan technique at different argon-ion laser wavelengths. The nonlinear transmission characteristics exhibit saturable absorption at 457.9 nm and 476.5 nm while they are dominated by excited state absorption at 488.0 nm.
KANDASAMY, K +6 more
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Single-Beam Z-Scan: Measurement Techniques and Analysis
Journal of Nonlinear Optical Physics & Materials, 1997The Z-scan technique is a popular method for measuring degenerate (single frequency) optical nonlinearities using a single laser beam. In order to perform reliable measurements, it is necessary to carefully characterize and control a number of experimental parameters, such as the beam quality, the power and temporal characteristics of the laser, the ...
P. B. Chapple +4 more
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