Abstract
We report our observation of the photorefractive effect in undoped aluminum nitride. We measured the coupling constant and the formation rate as a function of pump intensity at a wavelength of in a two-wave mixing experiment. The photorefractive gain coefficient was at , and the actual saturated value was probably larger than this. The time constant was at . In addition to a refractive index grating, an absorption grating was also formed, which is attributed mainly to an ionized trap density modulation process.
© 2010 Optical Society of America
Full Article | PDF ArticleMore Like This
M. B. Klein
Opt. Lett. 9(8) 350-352 (1984)
K. Kuroda, Y. Okazaki, T. Shimura, H. Okamura, M. Chihara, M. Itoh, and I. Ogura
Opt. Lett. 15(21) 1197-1199 (1990)
Pasquale Pagliusi and Gabriella Cipparrone
J. Opt. Soc. Am. B 21(5) 996-1004 (2004)