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    Interband cascade lasers
    1.
    发明授权
    Interband cascade lasers 有权
    带间级联激光器

    公开(公告)号：US08290011B2

    公开(公告)日：2012-10-16

    申请号：US13023656

    申请日：2011-02-09

    申请人： Igor Vurgaftman ,  Jerry R. Meyer ,  Chadwick L. Canedy ,  William W. Bewley ,  James R. Lindle ,  Chul-soo Kim ,  Mijin Kim

    发明人： Igor Vurgaftman ,  Jerry R. Meyer ,  Chadwick L. Canedy ,  William W. Bewley ,  James R. Lindle ,  Chul-soo Kim ,  Mijin Kim

    IPC分类号： H01S5/00

    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.

    摘要翻译： 提出了具有增益介质的增益介质和带间级联激光器。 增益介质可以具有以下特征中的一个或两个：（1）空穴注入器区域中的一个或多个空穴量子阱的厚度与有源量子阱区域中的有源孔量子阱的厚度相当， 使得空穴注入器区域中的价带最大值比活性孔量子阱中的价带最大值低至少100meV; 和（2）电子注入器区域的最后一个阱的厚度在介质的下一阶段的有源增益区域中的第一有源电子量子阱的厚度的85至110％之间。 包含根据本发明的增益介质的激光器可以在高温下在室温连续波操作中在约2.5至8μm的中红外范围内发射至少为4.6μm的波长，约400的阈值电流密度 A / cm 2和阈值功率密度约900W / cm2。

    Interband Cascade Lasers
    2.
    发明申请
    Interband Cascade Lasers 有权
    带间级联激光器

    公开(公告)号：US20120128018A1

    公开(公告)日：2012-05-24

    申请号：US13023656

    申请日：2011-02-09

    申请人： Igor Vurgaftman ,  Jerry R. Meyer ,  Chadwick L. Canedy ,  William W. Bewley ,  James R. Lindle ,  Chul-soo Kim ,  Mijin Kim

    发明人： Igor Vurgaftman ,  Jerry R. Meyer ,  Chadwick L. Canedy ,  William W. Bewley ,  James R. Lindle ,  Chul-soo Kim ,  Mijin Kim

    IPC分类号： H01S5/343 ,  H01S5/34 ,  H01L29/66 ,  B82Y20/00

    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.

    摘要翻译： 提出了具有增益介质的增益介质和带间级联激光器。 增益介质可以具有以下特征中的一个或两个：（1）空穴注入器区域中的一个或多个空穴量子阱的厚度与有源量子阱区域中的有源孔量子阱的厚度相当， 使得空穴注入器区域中的价带最大值比活性孔量子阱中的价带最大值低至少100meV; 和（2）电子注入器区域的最后一个阱的厚度在介质的下一阶段的有源增益区域中的第一有源电子量子阱的厚度的85至110％之间。 包含根据本发明的增益介质的激光器可以在高温下在室温连续波操作中在约2.5至8μm的中红外范围内发射至少为4.6μm的波长，约400的阈值电流密度 A / cm 2和阈值功率密度约900W / cm2。

    High-temperature interband cascade lasers
    3.
    发明授权
    High-temperature interband cascade lasers 有权
    高温带间级联激光器

    公开(公告)号：US08125706B2

    公开(公告)日：2012-02-28

    申请号：US12402627

    申请日：2009-03-12

    申请人： Igor Vurgaftman ,  Jerry R Meyer ,  Chadwick L. Canedy ,  William W. Bewley ,  James R. Lindle ,  Chul-soo Kim ,  Mijin Kim

    发明人： Igor Vurgaftman ,  Jerry R Meyer ,  Chadwick L. Canedy ,  William W. Bewley ,  James R. Lindle ,  Chul-soo Kim ,  Mijin Kim

    IPC分类号： H01S3/00

    CPC分类号： B82Y20/00 ,  H01S5/3077 ,  H01S5/3401 ,  H01S5/3407 ,  H01S5/3416 ,  H01S5/3422 ,  H01S5/34306

    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.

    摘要翻译： 提出了增益介质和带间级联激光器，带间级联放大器和具有增益介质的外腔激光器。 增益介质可以包括以下特征中的一个或多个：（1）有源量子阱区域包括厚和富InGaInSb孔; （2）孔喷射器包括厚度在规定范围内的两个以上的GaSb孔穴; （3）电子和空穴注入器被厚的AlSb屏障隔开，以抑制带间吸收; （4）将空穴注入器区域与相邻的有源量子阱区域分离的空穴注入器区域的第一电子势垒具有足以降低区中心活性电子量子阱和喷射器孔状态之间的波函数重叠的平方的厚度， 不超过5％; （5）电子注入器中的第一InAs电子阱的厚度以及电子注入器的总厚度减小; （6）级联级数减少; （7）过渡区域插入在增益介质的各个区域之间的界面处，以平滑导带最小值的突变; （8）包含Ga（InAlAs）Sb的厚的分离的约束层设置在有源增益区和包层之间以限制光学模式并增加其与有源级的重叠; 并且（9）优化包层的掺杂分布，以最小化光学模式与InAs / AlSb SL包覆层的最重掺杂部分的重叠。 带间级联激光器，带间级联放大器或采用具有这些特征的增益介质的外腔激光器可以在高温下以约2.5μm至约8μm的波长发射。

    Interband Cascade Lasers
    4.
    发明申请
    Interband Cascade Lasers 有权
    带间级联激光器

    公开(公告)号：US20130003770A1

    公开(公告)日：2013-01-03

    申请号：US13608115

    申请日：2012-09-10

    申请人： Igor Vurgaftman ,  Jerry R. Meyer ,  Chadwick L. Canedy ,  William W. Bewley ,  James R. Lindle ,  Chul-soo Kim ,  Mijin Kim

    发明人： Igor Vurgaftman ,  Jerry R. Meyer ,  Chadwick L. Canedy ,  William W. Bewley ,  James R. Lindle ,  Chul-soo Kim ,  Mijin Kim

    IPC分类号： H01S5/34 ,  H01S5/343

    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.

    摘要翻译： 提出了具有增益介质的增益介质和带间级联激光器。 增益介质可以具有以下特征中的一个或两个：（1）空穴注入器区域中的一个或多个空穴量子阱的厚度与有源量子阱区域中的有源孔量子阱的厚度相当， 使得空穴注入器区域中的价带最大值比活性孔量子阱中的价带最大值低至少100meV; 和（2）电子注入器区域的最后一个阱的厚度在介质的下一阶段的有源增益区域中的第一有源电子量子阱的厚度的85至110％之间。 包含根据本发明的增益介质的激光器可以在高温下在室温连续波操作中在约2.5至8μm的中红外范围内发射至少为4.6μm的波长，约400的阈值电流密度 A / cm 2和阈值功率密度约900W / cm2。

    High-Temperature Interband Cascade Lasers
    5.
    发明申请
    High-Temperature Interband Cascade Lasers 有权
    高温区间级联激光器

    公开(公告)号：US20120127564A1

    公开(公告)日：2012-05-24

    申请号：US13353770

    申请日：2012-01-19

    申请人： Igor Vurgaftman ,  Jerry R. Meyer ,  Chadwick L. Canedy ,  William W. Bewley ,  James R. Lindle ,  Chul-soo Kim ,  Mijin Kim

    发明人： Igor Vurgaftman ,  Jerry R. Meyer ,  Chadwick L. Canedy ,  William W. Bewley ,  James R. Lindle ,  Chul-soo Kim ,  Mijin Kim

    IPC分类号： H01S5/343 ,  B82Y20/00

    CPC分类号： B82Y20/00 ,  H01S5/3077 ,  H01S5/3401 ,  H01S5/3407 ,  H01S5/3416 ,  H01S5/3422 ,  H01S5/34306

    摘要： An interband cascade gain medium is provided. The gain medium can include at least one thick separate confinement layer comprising Ga(InAlAs)Sb between the active gain region and the cladding and can further include an electron injector region having a reduced thickness, a hole injector region comprising two hole quantum wells having a total thickness greater than about 100 Å, an active gain quantum well region separated from the adjacent hole injector region by an electron barrier having a thickness sufficient to lower a square of a wavefunction overlap between a zone-center active electron quantum well and injector hole states, and a thick AlSb barrier separating the electron and hole injectors of at least one stage of the active region.

    摘要翻译： 提供了一个带间级联增益介质。 所述增益介质可以包括至少一个厚的单独约束层，其包括在所述有源增益区域和所述包层之间的Ga（InAlAs）Sb，并且还可以包括具有减小的厚度的电子注入器区域，空穴注入器区域，包括两个具有 总厚度大于约100，通过电子势垒与相邻的空穴注入器区域隔开的有效增益量子阱区域，该电子势垒具有足以降低区域中心活性电子量子阱和喷射器孔状态之间的波函数的平方的重叠度 ，以及分离活性区域的至少一级的电子和空穴注入器的厚AlSb屏障。

    Interband cascade lasers
    7.
    发明授权
    Interband cascade lasers 有权
    带间级联激光器

    公开(公告)号：US08385378B2

    公开(公告)日：2013-02-26

    申请号：US13608115

    申请日：2012-09-10

    申请人： Igor Vurgaftman ,  Jerry R. Meyer ,  Chadwick Lawrence Canedy ,  William W. Bewley ,  James R. Lindle ,  Chul Soo Kim ,  Mijin Kim

    发明人： Igor Vurgaftman ,  Jerry R. Meyer ,  Chadwick Lawrence Canedy ,  William W. Bewley ,  James R. Lindle ,  Chul Soo Kim ,  Mijin Kim

    IPC分类号： H01S5/00

    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.

    摘要翻译： 提出了具有增益介质的增益介质和带间级联激光器。 增益介质可以具有以下特征中的一个或两个：（1）空穴注入器区域中的一个或多个空穴量子阱的厚度与有源量子阱区域中的有源孔量子阱的厚度相当， 使得空穴注入器区域中的价带最大值比活性孔量子阱中的价带最大值低至少100meV; 和（2）电子注入器区域的最后一个阱的厚度在介质的下一阶段的有源增益区域中的第一有源电子量子阱的厚度的85至110％之间。 包含根据本发明的增益介质的激光器可以在高温下在室温连续波操作中在约2.5至8μm的中红外范围内发射至少为4.6μm的波长，约400的阈值电流密度 A / cm 2和阈值功率密度约900W / cm2。

    High-temperature interband cascade lasers
    8.
    发明授权
    High-temperature interband cascade lasers 有权
    高温带间级联激光器

    公开(公告)号：US08493654B2

    公开(公告)日：2013-07-23

    申请号：US13353770

    申请日：2012-01-19

    申请人： Igor Vurgaftman ,  Jerry R. Meyer ,  Chadwick Lawrence Canedy ,  William W. Bewley ,  James R. Lindle ,  Chul-soo Kim ,  Mijin Kim

    发明人： Igor Vurgaftman ,  Jerry R. Meyer ,  Chadwick Lawrence Canedy ,  William W. Bewley ,  James R. Lindle ,  Chul-soo Kim ,  Mijin Kim

    IPC分类号： H01S5/30

    CPC分类号： B82Y20/00 ,  H01S5/3077 ,  H01S5/3401 ,  H01S5/3407 ,  H01S5/3416 ,  H01S5/3422 ,  H01S5/34306

    摘要： An interband cascade gain medium is provided. The gain medium can include at least one thick separate confinement layer comprising Ga(InAlAs)Sb between the active gain region and the cladding and can further include an electron injector region having a reduced thickness, a hole injector region comprising two hole quantum wells having a total thickness greater than about 100 Å, an active gain quantum well region separated from the adjacent hole injector region by an electron barrier having a thickness sufficient to lower a square of a wavefunction overlap between a zone-center active electron quantum well and injector hole states, and a thick AlSb barrier separating the electron and hole injectors of at least one stage of the active region.

    摘要翻译： 提供了一个带间级联增益介质。 所述增益介质可以包括至少一个厚的单独约束层，其包括在所述有源增益区域和所述包层之间的Ga（InAlAs）Sb，并且还可以包括具有减小的厚度的电子注入器区域，空穴注入器区域，包括两个具有 总厚度大于约100，通过电子势垒与相邻的空穴注入器区域隔开的有效增益量子阱区域，该电子势垒具有足以降低区域中心活性电子量子阱和喷射器孔状态之间的波函数的平方的重叠度 ，以及分离活性区域的至少一级的电子和空穴注入器的厚AlSb屏障。