Abstract

We propose a simple single-beam configuration for characterization of the amplitude, speed of growth, and polarization properties of the photoinduced refractive-index change that is due to a drift photorefractive mechanism of nonlinearity in crystals, namely, the modulation Z-scan technique, based on the modulation of an externally applied electric field. The results of a simple theoretical model developed for one-dimensional parabolic photorefractive lens formation in this configuration are illustrated by original experiments with a semi-insulating GaAs crystal at λ = 1.06 μm.

© 1996 Optical Society of America

Dynamics of photoinduced lens formation in a photorefractive Bi₁₂TiO₂₀ crystal under an external dc electric field

C. M. Gómez Sarabia, P. A. Márquez Aguilar, J. J. Sánchez Mondragón, S. Stepanov, and V. Vysloukh
J. Opt. Soc. Am. B 13(12) 2767-2774 (1996)

Characterization of dynamic optical nonlinearities by continuous time-resolved Z-scan

David O. Caplan, Gregory S. Kanter, and Prem Kumar
Opt. Lett. 21(17) 1342-1344 (1996)

Z-scan-based investigations of photorefractive self-focusing in KNbO₃ crystals

Roland Ryf, Andreas Lötscher, Christian Bosshard, Marko Zgonik, and Peter Günter
J. Opt. Soc. Am. B 15(3) 989-995 (1998)

Continuous-wave Z-scan measurement of photorefractive SBN:60

Azad Siahmakoun, Detlef Breitling, and Reza A. Najaf-Zadeh
Appl. Opt. 39(29) 5360-5366 (2000)

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

Georges Boudebs and Kamil Fedus
Appl. Opt. 48(21) 4124-4129 (2009)