Abstract
We investigate the effect of irradiation by a UV pulse laser on the third-order optical nonlinearity of CuCl-microcrystallite-doped glass as a function of the irradiation’s shot number, energy density per pulse, and wavelength. The response time τ is estimated from the luminescence decay time of the CuCl excitons. The absolute value of the third-order nonlinear susceptibility is measured by degenerate four-wave mixing. Values of both τ and decrease after UV irradiation. The figure of merit for the optical nonlinearity, where α is the absorption coefficient, is almost constant before and after UV irradiation and is approximately 500 esu cm s-1 in the case of 8-nm CuCl microcrystallites. This value is 1 order of magnitude larger than that of -microcrystallite-doped glasses. The mechanism by which τ and are decreased is discussed, considering defects levels formed at the interface between CuCl microcrystallites and glass matrix.
© 2000 Optical Society of America
Full Article | PDF ArticleMore Like This
Makoto Tomita and Masahiro Matsuoka
J. Opt. Soc. Am. B 7(7) 1198-1203 (1990)
H. Jerominek, S. Patela, M. Pigeon, Z. Jakubczyk, C. Delisle, and R. Tremblay
J. Opt. Soc. Am. B 5(2) 496-506 (1988)
N. M. Lawandy and R. L. MacDonald
J. Opt. Soc. Am. B 8(6) 1307-1314 (1991)