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ELECTROABSORPTION IN INGAAS/ALGAAS QUANTUM-WELLS
被引:0
|作者:
PEZESHKI, B
LORD, SM
HARRIS, JS
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暂无
中图分类号:
O4 [物理学];
学科分类号:
0702 ;
摘要:
Theoretical and experimental work show that electro-absorption improves and the quantum-confined Stark effect becomes stronger in In0.2Ga0.8As/AlxGa1-xAs quantum wells as the aluminum concentration (x) is increased in the barriers. This higher electro-absorption was used to fabricate a reflection modulator which exhibited a record reflectivity change of 77%. The enhanced electro-absorption is in contrast to material quality, as measured by photoluminescence intensity, which severely degrades with increasing aluminum composition.
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页码:437 / 441
页数:5
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