Abstract
The photorefractive properties of crystals in the wavelength range from are investigated. Conventional yellow and modified brown crystals with a variation of nonstoichiometric defects are examined. Brown crystals respond much faster and exhibit substantially higher photorefractive gain than yellow crystals, up to at and at . Ring-cavity self-pumped phase conjugation is demonstrated using both types of crystal. The phase-conjugate response of brown is 2 orders of magnitude faster than in yellow or Rh-doped , with a grating recording time below for power at . Various thresholding effects are analyzed to determine the optimal wavelength range for the two types of crystal. We find an optimum in the range of for yellow and in the range of for brown .
© 2005 Optical Society of America
Full Article | PDF ArticleMore Like This
Mojca Jazbinšek, Germano Montemezzani, Peter Günter, Alexander A. Grabar, Ivan M. Stoika, and Yulian M. Vysochanskii
J. Opt. Soc. Am. B 20(6) 1241-1246 (2003)
Tobias Bach, Mojca Jazbinšek, Germano Montemezzani, Peter Günter, Alexander A. Grabar, and Yulian M. Vysochanskii
J. Opt. Soc. Am. B 24(7) 1535-1541 (2007)
Tobias Bach, Mojca Jazbinšek, Peter Günter, Alexander A. Grabar, Ivan M. Stoika, and Yulian M. Vysochanskii
Opt. Express 13(24) 9890-9896 (2005)