Article comprising a dual-wavelength quantum cascade photon source

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	Article comprising a dual-wavelength quantum cascade photon source
其他题名	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
专利权人	LUCENT TECHNOLOGIES INC.
公开日期	1999-10-06
授权国家	欧洲专利局
专利类型	发明申请
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.
其他摘要	根据本发明的量子级联（QC）光子源可以在两个不同的波长同时发射，通常都在中红外。这是通过提供半导体层结构来实现的，其中在适当的偏置电压下，电子被注入能级E3，然后在到达有源区的基态E1之前被迫级联通过中间级E2。在该过程中，发射能量E3-E2（波长λ1）和E2-E1（波长λ2）的光子。根据本发明的双波长光子源可以以各种方式使用，例如，以确定在波长λ1和λ2处的气态样品的吸收，示例性地确定样品中特定化学化合物的浓度。
申请日期	1998-10-27
专利号	EP0948106A1
专利状态	失效
申请号	EP1998308790
公开（公告）号	EP0948106A1
IPC 分类号	H01L33/06 \| H01S5/00 \| H01S5/34 \| H01S3/18 \| G01N21/31 \| H01L33/00
专利代理人	-
代理机构	WATTS, CHRISTOPHER MALCOLM KELWAY, DR.
文献类型	专利
条目标识符	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[P]. 1999-10-06.