Results 241 to 250 of about 223,084 (301)

Degenerate multiwave mixing using Z-scan technique

Applied Physics Letters, 2008
This study deals with a multiwave mixing experiment using Z-scan technique. We show that it is possible to simplify the complex degenerate four-wave mixing (DFWM) experimental setup in order to characterize nonlinear materials. One object composed of three circular apertures is used as an input in a 4f coherent imaging system.
Georges Boudebs, Kamil Fedus, C Cassagne   +2 more
exaly   +5 more sources

Quantum analysis of the z-scan technique

Journal of the Optical Society of America B, 2007
A Gaussian-wave theory is developed for the classical and quantum analysis of the z-scan method that is often used to measure third-order nonlinearities. The theory allows us to compute the transmittance in the z scan and the associated regimes of amplitude squeezing.
Kumar, Prem, Köprülu, Kahraman G.
openaire   +3 more sources

Dark-field Z-scan imaging technique

Optics Communications, 2016
We report on Dark-Field Z-scan (DFZ-scan) as a new imaging technique combining Z-scan method with Dark-field microscopy in order to measure optical refraction nonlinearity. Numerical and experimental results are provided to validate this concept. The image of the induced phase shift is spatially resolved without introducing a complex interferometric ...
Wang, Hongzhen, Cassagne, Christophe, Leblond, Hervé, Boudebs, Georges   +3 more
openaire   +3 more sources

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Focus introduction: Z-scan technique

Optik, 2017
Abstract 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
exaly   +2 more sources

Time analogue of the z-scan technique suitable to waveguides

The European Physical Journal D, 2001
We propose a new technique to perform measurements of nonlinearities in optical waveguides based on the variation of an optical pulse chirp. This technique is analogous to the z-scan technique in the time domain. We analyze the new experimental method analytically and numerically, obtaining an useful expression relating the nonlinearity with a peak ...
E.J.S. Fonseca, E.A. Gouveia, J.M. Hickmann   +2 more
openaire   +2 more sources

Linear optical characterization of transparent thin films by the Z-scan technique

Applied Optics, 2009
We report experimental characterization of a very small rectangular phase shift (
Boudebs, Georges, Fedus, Kamil
openaire   +5 more sources

The validation of the Z-Scan technique for the determination of plasma glucose

SPIE Proceedings, 2013
Glucose is the main energy source for the human body. The concentration of blood glucose is regulated by several hormones including both antagonists: insulin and glucagon. The quantification of glucose in the blood is used for diagnosing metabolic disorders of carbohydrates, such as diabetes, idiopathic hypoglycemia and pancreatic diseases.
Sarah I. Alves, Elaine A. O. Silva, Simone S. Costa, Denise R. N. Sonego, Maira L. Hallack, Ornela L. Coppini, Fernanda Rowies, Ligia A. Azzalis, Virginia B. C. Junqueira, Edimar C. Pereira, Katya C. Rocha, Fernando L. A. Fonseca   +11 more
openaire   +2 more sources

Z-scan technique: a review from conventional Z-scan to white light Z-scan

Applied Physics B
Nonlinear (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, Aleksandr Ovsianikov, Robert Liska, Stefan Baudis   +3 more
openaire   +2 more sources