2-PHOTON ABSORPTION AND NONRESONANT NONLINEAR INDEX OF REFRACTION IN THE INTERSUBBAND TRANSITIONS IN THE QUANTUM-WELLS

被引：19

作者：

KHURGIN, JB ^{[1
]}

LI, S ^{[1
]}

机构：

[1] JOHNS HOPKINS UNIV,DEPT PHYS & ASTRON,BALTIMORE,MD 21218

来源：

APPLIED PHYSICS LETTERS | 1993年 / 62卷 / 02期

关键词：

D O I：

10.1063/1.109346

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A simple theory for the two-photon intersubband absorption and, associated with it, nonlinear refraction in multiple quantum wells (QWs) is developed. Using it, the third-order nonlinear susceptibility is evaluated for QWs of different shapes. It is shown that chi(3) of as much as 10(-7) esu can be achieved below the two-photon resonance where the absorption is small. Thus, it is preferable to use multiple QWs in nonlinear devices at frequencies less than half of the intersubband frequency.

引用

页码：126 / 128

页数：3

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