Single mode grating-outcoupled surface emitting laser with broadband and narrow-band DBR reflectors

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	Single mode grating-outcoupled surface emitting laser with broadband and narrow-band DBR reflectors
其他题名	Single mode grating-outcoupled surface emitting laser with broadband and narrow-band DBR reflectors
	MASOOD, TAHA; PATTERSON, STEVEN GREGORY; EVANS, GARY A.
	2004-10-26
专利权人	CHEMTRON RESEARCH LLC
公开日期	2004-10-26
授权国家	美国
专利类型	授权发明
摘要	A laser source is provided by the present invention, comprising a laser diode and has an active region with asymmetric distributed Bragg reflectors (DBRs) at either end to reflect light within the cavity, and an outcoupling grating in the center of the device, which couples light out of the cavity. One DBR is long and shallow, with a narrow-band reflective spectrum. The other DBR is short and deep, with a wide-band reflective spectrum. The lasing wavelength is determined by the reflective spectrum overlap of the two DBRs. Since the shallow DBR is highly reflective to only one Fabry Perot wavelength, and the deep DBR is highly reflective to a wide band of Fabry-Perot wavelengths, it is the reflective spectrum of the shallow DBR that determines the lasing wavelength.
其他摘要	本发明提供一种激光源，包括激光二极管，并且具有在两端具有不对称分布布拉格反射器（DBR）以在腔内反射光的有源区，以及在器件中心的耦合输出光栅，其耦合在一起。光从腔中射出。一个DBR长而浅，具有窄带反射光谱。另一个DBR短而深，具有宽带反射光谱。激光波长由两个DBR的反射光谱重叠确定。由于浅DBR仅对一个法布里珀罗波长具有高反射性，并且深DBR对宽带法布里 - 珀罗波长具有高反射性，因此浅DBR的反射光谱决定了激光发射波长。
主权项	A laser diode system, comprising: a laser cavity; a first reflective grating at one end of the laser cavity, wherein the first grating has a reflective spectrum substantially covering only a single Fabry Perot wavelength; a second reflective grating at the opposite end of the laser cavity, wherein the second grating has a reflective spectrum covering a broad band of wavelengths; and an outcoupling grating that couples light out of the laser cavity; wherein the overlap of the reflective spectra of the first and second reflective gratings determines the lasing wavelength.
申请日期	2002-09-26
专利号	US6810067
专利状态	授权
申请号	US10/255443
公开（公告）号	US6810067
IPC 分类号	H01S5/00 \| H01S5/187 \| H01S5/042 \| H01S5/0625 \| H01S5/12 \| H01S3/08
专利代理人	-
代理机构	YEE, DUKE W. HOLMES, PATRICK C. R.
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/45825
专题	半导体激光器专利数据库
作者单位	CHEMTRON RESEARCH LLC
推荐引用方式 GB/T 7714	MASOOD, TAHA,PATTERSON, STEVEN GREGORY,EVANS, GARY A.. Single mode grating-outcoupled surface emitting laser with broadband and narrow-band DBR reflectors. US6810067[P]. 2004-10-26.

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