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	Surface-emitting laser
	DAWSON, MARTIN DAVID; BESTWICK, TIMOTHY DAVID; DUGGAN, GEOFFREY
	1998-09-22
著作权人	SHARP KABUSHIKI KAISHA
专利号	US5812577
国家	美国
文献子类	授权发明
其他题名	Surface-emitting laser
英文摘要	A surface-emitting laser contains an optical cavity including a multiple quantum well (MQW) active region providing a source of optical emission in use. Top and bottom mirrors are disposed respectively above and below the MQW active region. The MQW active region is profiled so that it has a greater number of quantum wells in a central portion thereof than in a peripheral portion thereof. In alternative embodiments, a current-guiding region is profiled so that it has a first current-guiding portion with a relatively smaller aperture therethrough extending over a central portion of the MQW active region, and a second current-guiding portion with a relatively larger aperture therethrough; and one of the mirrors has a layer structure which, in a central portion of the cross-sectional area of such mirror, is different to that in a peripheral portion of said cross-sectional area.
公开日期	1998-09-22
申请日期	1995-11-13
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/47727]
专题	半导体激光器专利数据库
作者单位	SHARP KABUSHIKI KAISHA
推荐引用方式 GB/T 7714	DAWSON, MARTIN DAVID,BESTWICK, TIMOTHY DAVID,DUGGAN, GEOFFREY. Surface-emitting laser. US5812577. 1998-09-22.

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