OBSERVATION OF 3RD ORDER OPTICAL NONLINEARITY DUE TO INTERSUBBAND TRANSITIONS IN ALGAAS/GAAS SUPERLATTICES

被引：59

作者：

WALROD, D

AUYANG, SY

WOLFF, PA

SUGIMOTO, M

机构：

[1] MIT,ELECTR RES LAB,CAMBRIDGE,MA 02139

[2] NEC RES INST,PRINCETON,NJ 08540

[3] NEC CORP LTD,TSUKUBA,IBARAKI 305,JAPAN

来源：

APPLIED PHYSICS LETTERS | 1991年 / 59卷 / 23期

关键词：

D O I：

10.1063/1.105827

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the first observations of large third order optical nonlinearities in AlGaAs/GaAs superlattices due to intersubband transitions. The process is triply resonant when the first intersubband transition matches the radiation from CO2 lasers. The intersubband relaxation time has also been estimated from the dispersion of chi(3) with the laser difference frequency DELTA-omega and found to be in good agreement with other published values. The magnitude and frequency dependence of the intersubband mechanism have been calculated using the diagrammatic technique.

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页码：2932 / 2934

页数：3

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