OPTICALLY INDUCED FEMTOSECOND ELECTROMAGNETIC PULSES FROM GASB/ALSB STRAINED-LAYER SUPERLATTICES

被引：25

作者：

ZHANG, XC ^{[1
]}

HU, BB ^{[1
]}

XIN, SH ^{[1
]}

AUSTON, DH ^{[1
]}

机构：

[1] COLUMBIA UNIV,CTR TELECOMMUN RES,NEW YORK,NY 10027

来源：

APPLIED PHYSICS LETTERS | 1990年 / 57卷 / 08期

关键词：

D O I：

10.1063/1.103411

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The strain generated electric field in a 〈111〉 oriented misfit superlattice provides a suitable bias for generating optically induced femtosecond electromagnetic radiation. We have measured the electromagnetic radiation from GaSb/AlSb strained-layer superlattices and GaSb thin films; extremely fast electromagnetic pulses from 〈111〉 oriented superlattices have been observed. Because the quantum well structure in the superlattice samples limits the pulse duration of the transient photocurrent, it is possible to generate electromagnetic radiation having a pulse duration comparable with the photocarrier transit time across the quantum well.

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页码：753 / 755

页数：3

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