公开(公告)号：US07010010B2

公开(公告)日：2006-03-07

申请号：US10465253

申请日：2003-06-19

申请人： Federico Capasso ,  Alfred Yi Cho ,  Claire F. Gmachl ,  Milton L. Peabody ,  Arthur Mike Sergent ,  Deborah Lee Sivco ,  Alexander Soibel

发明人： Federico Capasso ,  Alfred Yi Cho ,  Claire F. Gmachl ,  Milton L. Peabody ,  Arthur Mike Sergent ,  Deborah Lee Sivco ,  Alexander Soibel

IPC分类号： H01S5/00

CPC分类号： B82Y20/00 ,  H01S5/06 ,  H01S5/1096 ,  H01S5/22 ,  H01S5/2214 ,  H01S5/3422 ,  H01S5/34306 ,  H01S5/34313 ,  H01S2304/02

摘要： A broadband CLE capable of operation simultaneously at multiple wavelengths comprises: a core region including a multiplicity or cascade of stages, each stage including a radiative transition region. A first group of stages emits radiation at a first wavelength and at a first aggregate intensity per group, and a second group of stages emits radiation at a second wavelength and at a second aggregate intensity per group lower than the first intensity. The invention is characterized in that the second group has more stages than said first group, and the per-stage intensity of the first group is greater than that of the second group. This design reduces the difference between said first and second aggregate intensities. In one embodiment, groups that are located at or near to the ends of the cascade have more stages than groups that are centrally located within the cascade regardless of their wavelength. Our invention significantly reduces variations in modal gain across the desired broadband spectrum and produces sufficiently flat gain without requiring elaborate redesign of the stages. These features enable cw operation of a broadband intersubband laser.

摘要翻译： 能够在多个波长同时运行的宽带CLE包括：包括多个或级联级的核心区域，每个阶段包括辐射过渡区域。 第一组阶段以每组发射第一波长和第一聚集强度的辐射，而第二组阶段以低于第一强度的第二波长发射辐射，并以每组的第二聚集强度发射。 本发明的特征在于，第二组具有比所述第一组更多的阶段，并且第一组的每阶段强度大于第二组的每阶段强度。 该设计减少了所述第一和第二聚集强度之间的差异。 在一个实施例中，位于级联端部处或附近的组具有比级联中心位置的级更多的级，而不管它们的波长如何。 我们的发明显着地减少了所需宽带频谱的模态增益的变化，并产生足够平坦的增益，而不需要对级进行精心的重新设计。 这些功能可以实现宽带子带间激光器的cw操作。

公开(公告)号：US06940639B1

公开(公告)日：2005-09-06

申请号：US10812328

申请日：2004-03-29

申请人： Alexey Belyanin ,  Alfred Yi Cho ,  Claire F. Gmachl ,  Oana Malis ,  Milton L. Peabody, Jr. ,  Arthur Mike Sergent ,  Deborah Lee Sivco

发明人： Alexey Belyanin ,  Alfred Yi Cho ,  Claire F. Gmachl ,  Oana Malis ,  Milton L. Peabody, Jr. ,  Arthur Mike Sergent ,  Deborah Lee Sivco

IPC分类号： G02F1/017 ,  G02F1/377 ,  G02F1/39 ,  G02B6/10 ,  H01S5/34

CPC分类号： B82Y20/00 ,  G02F1/01708 ,  G02F1/377 ,  G02F1/395 ,  G02F2001/01733 ,  G02F2001/01775

摘要： An optical device comprises a cavity resonator and an intracavity ridge waveguide. The ridge waveguide includes a monolithically integrated intersubband core region and a nonlinear mixing region (NMR). In response to external pumping energy the core region generates laser light at a first frequency and in a first transverse mode. In response to the laser light the NMR generates parametric light at a second frequency and in a second transverse mode. For phase matching the effective-refractive-index-versus-ridge-width characteristics of the modes of the laser and the parametric light intersect one another at a phase matching width and so that, at greater widths, the effective refractive index of the mode of the higher frequency light is less than that of the lower frequency light. For true phase matching the width of the ridge is made to be essentially equal to the phase matching width.

摘要翻译： 光学装置包括空腔谐振器和腔内脊波导。 脊波导包括单片集成的子带核心区域和非线性混合区域（NMR）。 响应于外部泵浦能量，核心区域以第一频率和第一横向模式产生激光。 响应于激光，NMR以第二频率和第二横向模式产生参数光。 对于相位匹配，激光器和参量光的模式的有效折射率与脊宽度特性以相位匹配宽度彼此相交，并且使得在较大宽度下，有效折射率的模式 较高频率的光小于较低频率的光。 为了实现相位匹配，使得脊的宽度基本上等于相位匹配宽度。