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.

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页码：256 / 258

页数：3

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