Technique for measuring intersubband electroluminescence in a quantum cascade laser

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	Technique for measuring intersubband electroluminescence in a quantum cascade laser
其他题名	Technique for measuring intersubband electroluminescence in a quantum cascade laser
	CAPASSO, FEDERICO; CHO, ALFRED YI; COLOMBELLI, RAFFAELE; GMACHL, CLAIRE F.; HUTCHINSON, ALBERT LEE; SERGENT, ARTHUR MIKE; SIVCO, DEBORAH LEE; TREDICUCCI, ALESSANDRO
	2002-10-10
专利权人	LUCENT TECHNOLOGIES, INC.
公开日期	2002-10-10
授权国家	美国
专利类型	发明申请
摘要	The measurement of intersubband electroluminescence (ISB-EL) in unipolar quantum cascade lasers is achieved by forming a longitudinal cleave through the active region and waveguide of the QC laser device, exposing a complete side face of the device, including the active region. The conventional laser facets at the entrance and exit of the active region are coated with a highly reflective material and the emission from the exposed side face is measured. In theory, the sideface emission would comprise only the ISB-EL spontaneous emission, but some additional laser emission (due to scattering in the imperfect waveguide structure) also exits along this sideface. Spatial filtering and/or polarization monitoring can be used to differentiate the laser emission from the ISB-EL spontaneous emission.
其他摘要	单极量子级联激光器中子带间电致发光（ISB-EL）的测量通过形成穿过QC激光器器件的有源区和波导的纵向劈裂，暴露器件的完整侧面（包括有源区）而实现。在有源区的入口和出口处的常规激光器面用高反射材料涂覆，并且测量来自暴露侧面的发射。理论上，侧面发射将仅包括ISB-EL自发发射，但是某些附加的激光发射（由于不完美波导结构中的散射）也沿着该侧面出射。空间滤波和/或偏振监测可以用于区分激光发射和ISB-EL自发发射。
主权项	A technique for measuring intersubband electroluminescence spontaneous emission from a unipolar quantum cascade laser device, the technique comprising the steps of: a) forming a unipolar quantum cascade laser device, comprising a ridge waveguide structure including a longitudinally disposed active region and a pair of laser facets at the entrance and exit of said ridge waveguide; b) longitudinally cleaving said laser device along the ridge waveguide structure; c) forming highly reflective coatings on said pair of laser facets; d) energizing said QC laser device with an input current to initiate lasing emission along or in the direction of the ridge; and e) measuring the intersubband electroluminescence spontaneous emission from the longitudinal portion of the active region exposed by the cleaving process of step b).
申请日期	2001-04-04
专利号	US20020146049A1
专利状态	失效
申请号	US09/826237
公开（公告）号	US20020146049A1
IPC 分类号	H01S5/00 \| H01S5/026 \| H01S5/0683 \| H01S5/10 \| H01S5/34
专利代理人	-
代理机构	-
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/65901
专题	半导体激光器专利数据库
作者单位	LUCENT TECHNOLOGIES, INC.
推荐引用方式 GB/T 7714	CAPASSO, FEDERICO,CHO, ALFRED YI,COLOMBELLI, RAFFAELE,et al. Technique for measuring intersubband electroluminescence in a quantum cascade laser. US20020146049A1[P]. 2002-10-10.