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    • 10. 发明申请
    • QUANTUM CASCADE LASER
    • 量子CASCADE激光
    • WO2015081217A1
    • 2015-06-04
    • PCT/US2014/067646
    • 2014-11-26
    • THORLABS QUANTUM ELECTRONICS, INC.
    • CANEAU, Catherine, GenevieveZAH, Chung-engXIE, Feng
    • H01S5/34
    • H01S5/3402H01S5/3415
    • A quantum cascade laser structure comprises a plurality of quantum wells and a plurality of barriers, at least a portion of which define an active region, one end of said active region being bordered by an injector barrier, wherein two or more adjacent quantum wells of the plurality in the plurality of quantum wells that define the active region are positioned next to the injector barrier and each of the two or more wells have a width narrower than the widths of two or more succeeding quantum wells in the plurality of quantum wells that define the active region. The resulting active region has increased lifetime of the transition from the upper to the lower photon emission energy state, resulting in higher efficiencies and better overall performance particularly for devices emitting or lasing at long wavelengths (> 7 μm).
    • 量子级联激光器结构包括多个量子阱和多个屏障,其至少一部分限定有源区域,所述有源区域的一端由注入器屏障界定,其中两个或更多个相邻的量子阱 限定有源区域的多个量子阱中的多个位于喷射器屏障旁边,并且两个或更多个阱中的每一个具有比限定多个量子阱中的两个或更多个后续量子阱的宽度的宽度的宽度 活跃区域。 所产生的有源区域具有从上到下的光子发射能态转变的寿命增加,导致更高的效率和更好的整体性能,特别是对于在长波长(>7μm)处发射或发射的器件。