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	High-Temperature Interband Cascade Lasers
	VURGAFTMAN, IGOR; MEYER, JERRY R.
	2010-04-22
著作权人	THE GOVERNMENT OF THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF THE NAVY
专利号	US20100097690A1
国家	美国
文献子类	发明申请
其他题名	High-Temperature Interband Cascade Lasers
英文摘要	A gain medium and an interband cascade laser, an interband cascade amplifier, and an external cavity laser having the gain medium are presented. The gain medium can include any one or more of the following features: (1) the active quantum well region includes a thick and In-rich GaInSb hole well; (2) the hole injector includes two or more GaSb hole wells having thicknesses in a specified range; (3) the electron and hole injectors are separated by a thick AlSb barrier to suppress interband absorption; (4) a first electron barrier of the hole injector region separating the hole injector region from an adjacent active quantum well region has a thickness sufficient to lower a square of a wavefunction overlap between a zone-center active electron quantum well and injector hole states to not more than 5%; (5) the thickness of the first InAs electron well in the electron injector, as well as the total thickness of the electron injector, is reduced; (6) the number of cascaded stages is reduced; (7) transition regions are inserted at the interfaces between the various regions of the gain medium so as to smooth out abrupt shifts of the conduction-band minimum; (8) thick separate confinement layers comprising Ga(InAlAs)Sb are disposed between the active gain region and the cladding to confine the optical mode and increase its overlap with the active stages; and (9) the doping profile of the cladding layers is optimized to minimize the overlap of the optical mode with the most heavily-doped portion of the InAs/AlSb SL cladding layers. An interband cascade laser, an interband cascade amplifier, or an external cavity laser employing a gain medium having these features can emit at a wavelength of about 2.5 μm to about 8 μm at high temperatures.
公开日期	2010-04-22
申请日期	2009-03-12
状态	授权
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/89161]
专题	半导体激光器专利数据库
作者单位	THE GOVERNMENT OF THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF THE NAVY
推荐引用方式 GB/T 7714	VURGAFTMAN, IGOR,MEYER, JERRY R.. High-Temperature Interband Cascade Lasers. US20100097690A1. 2010-04-22.

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