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	Article comprising a dual-wavelength quantum cascade photon source
	CAPASSO, FEDERICO; CHO, ALFRED YI; FAIST, JEROME; HUTCHINSON, ALBERT LEE; SIRTORI, CARLO; SIVCO, DEBORAH LEE; TREDICUCCI, ALESSANDRO
	1999-10-06
著作权人	LUCENT TECHNOLOGIES INC.
专利号	EP0948106A1
国家	欧洲专利局
文献子类	发明申请
其他题名	Article comprising a dual-wavelength quantum cascade photon source
英文摘要	The quantum cascade (QC) photon source according to this invention can emit simultaneously at two distinct wavelengths, typically both in the mid-infrared. This is accomplished through provision of a semiconductor layer structure in which, at the proper bias voltage, electrons are injected into a energy level E3 and then forced to cascade through an intermediate level E2 before reaching the ground state E1 of the active region. In the process, photons of energy E3-E2 (wavelength λ1) and E2-E1 (wavelength λ2) are emitted. Dual wavelength photon sources according to this invention can be used in a variety of ways, e.g., to determine the absorption of a gaseous sample at wavelengths λ1 and λ2, exemplarily to determine the concentration of a particular chemical compound in the sample.
公开日期	1999-10-06
申请日期	1998-10-27
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/88959]
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,FAIST, JEROME,et al. Article comprising a dual-wavelength quantum cascade photon source. EP0948106A1. 1999-10-06.

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