INDUCING NORMALLY FORBIDDEN TRANSITIONS WITHIN THE CONDUCTION-BAND OF GAAS QUANTUM-WELLS

被引：23

作者：

PAN, JL

WEST, LC

WALKER, SJ

MALIK, RJ

WALKER, JF

机构：

[1] AT&T BELL LABS,HOLMDEL,NJ 07733

[2] AT&T BELL LABS,MURRAY HILL,NJ 07974

来源：

APPLIED PHYSICS LETTERS | 1990年 / 57卷 / 04期

关键词：

D O I：

10.1063/1.103693

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Six heretofore unobserved envelope state transitions within the conduction band of an AlAs/GaAs quantum well are reported, two of which are forbidden in a symmetric quantum well. The highest energy transition is resonant with 2.86 μm wavelength light. These resonant energies and absorption strengths agree with predictions based on a many-body theory of electrons in nonparabolic energy bands. A new type of infrared modulator is possible via absorption changes in the "forbidden" transition between the first and the third conduction subbands.

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页码：366 / 368

页数：3

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