Single-mode photonic-crystal VCSELs

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	Single-mode photonic-crystal VCSELs
其他题名	Single-mode photonic-crystal VCSELs
	BIRKEDAL, DAN; BISCHOFF, SVEND; JUHL, MICHAEL; MADSEN, MAGNUS HALD; ROMSTAD, FRANCIS PASCAL
	2010-04-06
专利权人	ALIGHT PHOTONICS APS
公开日期	2010-04-06
授权国家	美国
专利类型	授权发明
摘要	This specification discloses a VCSEL (Vertical-Cavity Surface-Emitting Laser) device with single-mode output and optionally single polarization output. This device is given by lateral mode confinement by the PBG (Photonic Band-Gap) effect by shallow etching in a partial VCSEL top mirror. The PBG area encircles a MS-region (Mode-Shaping region), which is characterized by large longitudinal mode losses. The MS-region encircles the LA-region (Light Aperture region), which is characterised by low longitudinal mode losses. The MS-region does not contribute to the lateral mode-confinement to the LA-aperture, and the lateral modes confined by the PBG area. The VCSEL is thus optimized for single fundamental mode operation.
其他摘要	该说明书公开了一种具有单模输出和可选的单极化输出的VCSEL（垂直腔面发射激光器）器件。该器件通过在部分VCSEL顶部镜子中通过浅蚀刻的PBG（光子带隙）效应通过横向模式限制来给出。 PBG区域围绕MS区域（模式成形区域），其特征在于大的纵向模式损耗。 MS区域围绕LA区域（光孔区域），其特征在于低纵向模式损耗。 MS区域对LA孔径的横向模式限制没有贡献，并且横向模式受到PBG区域的限制。因此，VCSEL针对单基模操作进行了优化。
主权项	A vertical cavity surface emitting laser (VCSEL) involving a multi-layer structure comprising different regions defined in one or more layers, the relations between the different regions being determined in a projection along a direction normal to the layers, the VCSEL comprising: a semiconductor material layer having an active region for generating light and for emitting the generated light, first and second at least substantially parallel mirrors forming a laser cavity comprising the active region, the laser cavity and the active region supporting at least one longitudinal electromagnetic mode for the generated light, a central light aperture (LA) region providing a long photon lifetime and overlapping with the active region, a mode-shaping (MS) region formed within or adjacent to the first and/or the second mirror and encircling the LA-region, the MS-region providing a shorter photon lifetime than the LA-region, a mode confinement (MC) region formed within or adjacent to the first and/or the second mirror and encircling the MS-region, and designed to provide lateral confinement of modes to the MS-region and the LA-region, wherein dimensions of the LA-region, the MS-region and the MC-region are selected to engineer an efficiency of laser action in each transverse electromagnetic mode of the cavity and the LA-region is an anti-guide with respect to the MS-region and the MS-region is designed to reduce/minimise lateral confinement of modes to the LA-region.
申请日期	2005-11-29
专利号	US7693203
专利状态	授权
申请号	US11/720275
公开（公告）号	US7693203
IPC 分类号	H01S5/00
专利代理人	-
代理机构	BENT, STEPHEN A. FOLEY & LARDNER LLP
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/47044
专题	半导体激光器专利数据库
作者单位	ALIGHT PHOTONICS APS
推荐引用方式 GB/T 7714	BIRKEDAL, DAN,BISCHOFF, SVEND,JUHL, MICHAEL,et al. Single-mode photonic-crystal VCSELs. US7693203[P]. 2010-04-06.

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