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公开(公告)号：EP2643908B1
公开(公告)日：2019-05-08
申请号：EP11843179.0
申请日：2011-11-21
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公开(公告)号：EP3376615A1
公开(公告)日：2018-09-19
申请号：EP18169357.3
申请日：2011-11-21
发明人： VURGAFTMAN, Igor , MEYER, Jerry, R. , CANEDY, Chadwick, L. , BEWLEY, William, W. , LINDLE, James, R. , KIM, Chul-soo , KIM, Mijin
CPC分类号： B82Y20/00 , H01S5/3401 , H01S5/3422 , H01S5/34306
摘要： A gain medium and an interband cascade laser, having the gain medium are presented. The gain medium comprises an active gain region comprising a plurality of cascading stages, each of the cascading stages including an active gain quantum well region comprising one or more active electron quantum wells and one or more active hole quantum wells, a hole injector region comprising one or more hole quantum wells, and an electron injector region comprising one or more electron quantum wells, a final electron quantum well of an electron injector region of a first stage being separated from an adjacent first active electron quantum well of an active gain quantum well region of a second stage by an electron barrier. The final electron quantum well of the electron injector region of the first stage has a thickness that is between 85 and 110% of a thickness of the adjacent first active electron quantum well of the second stage.
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公开(公告)号：EP2643908A2
公开(公告)日：2013-10-02
申请号：EP11843179.0
申请日：2011-11-21
发明人： VURGAFTMAN, Igor , MEYER, Jerry, R. , CANEDY, Chadwick, L. , BEWLEY, William, W. , LINDLE, James, R. , KIM, Chul-soo , KIM, Mijin
CPC分类号： B82Y20/00 , H01S5/3401 , H01S5/3422 , H01S5/34306
摘要： A gain medium and an interband cascade laser, having the gain medium are presented. The gain medium can have one or both of the following features: (1) the thicknesses of the one or more hole quantum wells in the hole injector region are reduced commensurate with the thickness of the active hole quantum well in the active quantum well region, so as to place the valence band maximum in the hole injector region at least about 100 meV lower than the valence band maximum in the active hole quantum well; and (2) the thickness of the last well of the electron injector region is between 85 and 110% of the thickness of the first active electron quantum well in the active gain region of the next stage of the medium. A laser incorporating a gain medium in accordance with the present invention can emit in the mid-IR range from about 2.5 to 8 μm at high temperatures with room-temperature continuous wave operation to wavelengths of at least 4.6 μm, threshold current density of about 400 A/cm2 and threshold power density of about 900 W/cm2.
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公开(公告)号：EP3376615B1
公开(公告)日：2019-10-09
申请号：EP18169357.3
申请日：2011-11-21
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公开(公告)号：EP3376616A1
公开(公告)日：2018-09-19
申请号：EP18169359.9
申请日：2011-11-21
发明人： VURGAFTMAN, Igor , MEYER, Jerry, R. , CANEDY, Chadwick, L. , BEWLEY, William, W. , LINDLE, James, R. , KIM, Chul-soo , KIM, Mijin
CPC分类号： B82Y20/00 , H01S5/3401 , H01S5/3422 , H01S5/34306
摘要： A gain medium and an interband cascade laser, having the gain medium are presented. The gain medium comprises an active gain region comprising a plurality of cascading stages, each of the cascading stages including an active gain quantum well region comprising one or more active electron quantum wells and one or more active hole quantum wells, a hole injector region comprising one of one Ga(In)Sb hole quantum wells and three Ga(In)Sb hole quantum wells, and an electron injector region comprising one or more electron quantum wells. At least one parameter of the interband cascade medium is configured such that an energy separation of ΔE ≥ 100 meV is maintained between the top valence state in the hole injector region and the valence band maximum in the one or more active hole quantum wells.
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