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	Methods and Apparatus for Improving Collimation of Radiation Beams
	CAPASSO, FEDERICO; YU, NANFANG; FAN, JONATHAN
	2010-09-09
著作权人	PRESIDENT AND FELLOWS OF HARVARD COLLEGE
专利号	US20100226134A1
国家	美国
文献子类	发明申请
其他题名	Methods and Apparatus for Improving Collimation of Radiation Beams
英文摘要	An apparatus for collimating radiation can include an aperture of subwavelength dimensions and a neighboring set of grooves defined on a metal film integrated with an active or passive device that emits radiation. Integration of the beam collimator onto the facet of a laser or other radiation-emitting device provides for beam collimation and polarization selection. Beam divergence can be reduced by more than one order of magnitude compared with the output of a conventional laser. An active beam collimator with an aperture-groove structure can be integrated with a wide range of optical devices, such as semiconductor lasers (e.g., quantum cascade lasers), light emitting diodes, optical fibers, and fiber lasers.
公开日期	2010-09-09
申请日期	2008-11-19
状态	授权
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/58356]
专题	半导体激光器专利数据库
作者单位	PRESIDENT AND FELLOWS OF HARVARD COLLEGE
推荐引用方式 GB/T 7714	CAPASSO, FEDERICO,YU, NANFANG,FAN, JONATHAN. Methods and Apparatus for Improving Collimation of Radiation Beams. US20100226134A1. 2010-09-09.

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