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	Thin-film large-area coherent light source, filter and amplifier apparatus and method
	KOPP, VICTOR IL'ICH; ZHANG, ZHAO-QING; GENACK, AZRIEL ZELIG
	2007-07-10
著作权人	CHIRAL PHOTONICS, INC.
专利号	US7242702
国家	美国
文献子类	授权发明
其他题名	Thin-film large-area coherent light source, filter and amplifier apparatus and method
英文摘要	Lasing at the edge of the reflection band or at a defect state within the reflection band of a thin one-dimensional feedback structure is used to create a large-area, thin-film laser source with transverse dimensions that can be much greater than the film thickness. Angular confinement of radiation propagating perpendicular to the layers leads to a spreading of the beam inside the medium which is much greater than the diffraction divergence. This enhances the spatial extent of correlation at the output surface of the thin film. When a pump source induces gain at the lasing threshold in a wide region, a spatially coherent monochromatic light beam is emitted perpendicular to the film surface from the entire gain region. Alternate embodiments of the present invention include a passive spatial filter and an active amplifier.
公开日期	2007-07-10
申请日期	2004-01-02
状态	授权
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/33878]
专题	半导体激光器专利数据库
作者单位	CHIRAL PHOTONICS, INC.
推荐引用方式 GB/T 7714	KOPP, VICTOR IL'ICH,ZHANG, ZHAO-QING,GENACK, AZRIEL ZELIG. Thin-film large-area coherent light source, filter and amplifier apparatus and method. US7242702. 2007-07-10.

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