Uniaxially strained semiconductor multiple quantum well device u

Details Uniaxially strained semiconductor multiple quantum well device u Uniaxially strained semiconductor multiple quantum well device u

1993-11-19

1995-01-10

Lee, John D.

Optical: systems and elements

Optical modulator

Light wave temporal modulation

257 14, 257 94, 359245, G02F 1015

Patent

active

053812603

ABSTRACT:
The present invention is a spatial light modulator which uses an uniaxially trained multiple quantum well (MQW) structure with an anisotropic absorption to rotate the polarization of light normal to the MQW structure. The anisotropy which produces this rotation is the result of a thermally induced in-plane anisotropic strain. The MQW light modulator based on this process has a high contrast ratio of 7000:1 and increased speed as compared to other similar modulators.

REFERENCES:
patent: 4879763 (1989-11-01), Wood
patent: 5107307 (1992-04-01), Onose et al.
patent: 5274247 (1993-12-01), Dutta et al.

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