2-WAVE MIXING IN PHOTOREFRACTIVE ALGAAS/GAAS QUANTUM-WELLS

被引：48
|
作者：
WANG, QN [1 ]
NOLTE, DD [1 ]
MELLOCH, MR [1 ]
机构：
[1] PURDUE UNIV,SCH ELECT ENGN,W LAFAYETTE,IN 47907
来源：
APPLIED PHYSICS LETTERS | 1991年 / 59卷 / 03期
关键词：
D O I：
10.1063/1.105613
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have observed two-wave mixing in semi-insulating AlGaAs/GaAs multiple quantum well structures at wavelengths near the exciton absorption. The photorefractive index changes are caused by the Franz-Keldysh effect on quantum-confined excitons. Photorefractive gains larger than 200 cm-1 are obtained for the first time at wavelengths near 836 nm using stationary fringes and dc applied fields up to 5 kV/cm. The direction of energy transfer between the two beams is determined by the direction of applied electric field.
引用
收藏
页码：256 / 258
页数：3
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