PHOTOREFRACTIVE GRATINGS INDUCED IN KNBO3 BY PICOSECOND LIGHT-PULSES

被引：4

作者：

REEVES, RJ ^{[1
]}

JANI, MG ^{[1
]}

POWELL, RC ^{[1
]}

MIZELL, GJ ^{[1
]}

机构：

[1] VIRGO OPT INC,PORT RICHEY,FL 34668

来源：

JOURNAL OF LUMINESCENCE | 1990年 / 45卷 / 1-6期

关键词：

D O I：

10.1016/0022-2313(90)90210-3

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Photorefractive gratings have been generated in KNbO3 crystals using 532 nm 30 ps laser pulses in a degenerate four-wave mixing experiment. The results show the grating comprises two components; a conjugate peak associated with the third-order susceptibility of the three coincident optical pulses and a photorefractive component lasting for several nanoseconds. The rapid formation of the photorefractive component indicates the charge carriers are trapped within 100 ps. Calculations show that a mechanism associated with a relaxation mode of the Nb5+ ions hopping between potential wells in the unit cell may be contributing to the observed intensity of the conjugate peak. © 1990.

引用

页码：419 / 422

页数：4

共 14 条

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