Accession Number : ADA311748

Title :   Generation of Advanced Optical Modulators Using the Piezoelectric Effect.

Descriptive Note : Technical rept.,

Corporate Author : ARMY RESEARCH LAB FORT MONMOUTH NJ

Personal Author(s) : Wittstruck, Richard H.

PDF Url : ADA311748

Report Date : AUG 1996

Pagination or Media Count : 25

Abstract : In recent years, interest in the realization of optical modulators has been on the rise due to several device breakthroughs which employ the quantum confined Stark effect (QCSE). This family of devices has demonstrated remarkably high contrast ratio (7000:1) and optical switching speed (10(exp-12) sec parameters. While these devices have surpassed their conventional self electrooptic effect device (SEED) counterparts in performance and utility, they lack multimode, room temperature operation due to the need for a thermally induced strain between the substrate and the epitaxial layer. One potential solution to this issue is the introduction of a piezoelectric substrate which would afford a critical degree of freedom in the magnitude and direction of induced strain required to achieve multimode room temperature operation. This report proposes an integrated parametric model which defines the required material and device design/performance characteristics for attaining the next generation of spatial light modulators These modulators will be critical components in achieving real time, optical target recognition capability on the battlefield.

Descriptors :   *TARGET RECOGNITION, *OPTICAL DETECTORS, *PIEZOELECTRIC EFFECT, MATHEMATICAL MODELS, SPATIAL DISTRIBUTION, CONTRAST, PARAMETRIC ANALYSIS, REAL TIME, QUANTUM THEORY, EPITAXIAL GROWTH, DEGREES OF FREEDOM, PIEZOELECTRIC MATERIALS, MULTIMODE, STARK EFFECT, FIELD CONDITIONS, CRITICALITY(GENERAL), LIGHT MODULATORS.

Subject Categories : Optical Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE