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    • 27. 发明授权
    • Material systems for long wavelength lasers grown on InP substrates
    • 用于在InP衬底上生长的长波长激光器的材料系统
    • US06801558B2
    • 2004-10-05
    • US10173369
    • 2002-06-14
    • Dariusz Burak
    • Dariusz Burak
    • H01S500
    • B82Y20/00H01S5/183H01S5/34306
    • A vertical cavity surface emitting laser (VCSEL) capable of producing long-wavelength light has a substrate of InP and an active region with alternating quantum wells and barrier layers. The target wavelength range is preferably between 1.2-1.4 um. The quantum well is made of AlGaAsSb or GaAsSb, and the barrier layers are made of AlGaAsSb, AlInGaAs, or AlInAs. The active region is sandwiched between two mirror stacks that are preferably epitaxially grown Distributed Bragg Reflectors. The active region has large conduction and valence band offsets (&Dgr;Ec and &Dgr;Ev) for effective carrier containment over the wide range of ambient temperatures in which the VCSEL is expected to function. The active region can be designed to have little or no lattice strain on the InP substrate.
    • 能够产生长波长光的垂直腔表面发射激光器(VCSEL)具有InP衬底和具有交替的量子阱和势垒层的有源区。 目标波长范围优选在1.2-1.4μm之间。 量子阱由AlGaAsSb或GaAsSb制成,并且阻挡层由AlGaAsSb,AlInGaAs或AlInAs制成。 有源区夹在优选外延生长的分布布拉格反射器的两个反射镜叠层之间。 有源区域在VCSEL预期起作用的宽范围的环境温度范围内具有大的传导和价带偏移(DeltaEc和DeltaEv),用于有效的载流子保持。 有源区可以被设计成在InP衬底上具有很少或没有晶格应变。