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公开(公告)号：US20170256915A1
公开(公告)日：2017-09-07
申请号：US15447484
申请日：2017-03-02
Applicant: Princeton Optronics, Inc.
Inventor： Chuni Ghosh , Jean-Francois Seurin , Delai Zhou , Laurence Watkins
CPC classification number: H01S5/18361 , H01S5/026 , H01S5/0421 , H01S5/06226 , H01S5/18305 , H01S5/18311 , H01S5/1833 , H01S5/18355 , H01S5/18383 , H01S5/18386 , H01S5/187 , H01S5/2215 , H01S5/3095 , H01S5/34 , H01S5/423
Abstract: A Vertical Cavity Surface Emitting Laser (VCSEL) includes a reflecting surface of the VCSEL. A gain region is positioned on the distributed Bragg reflector that generates optical gain. The gain region comprises a first and second multiple quantum well stack, a tunnel junction positioned between the first and second multiple quantum well stack, and a current aperture positioned on one of the first and second multiple quantum well stack. The current aperture confines a current flow in the gain region. A partially reflective surface and the reflective surface forming a VCSEL resonant cavity, wherein an output optical beam propagates from the partially reflecting surface.
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公开(公告)号：US09268012B2
公开(公告)日：2016-02-23
申请号：US14304872
申请日：2014-06-13
Applicant: Princeton Optronics Inc.
Inventor： Chuni Lal Ghosh , Jean Francois Seurin , Laurence S Watkins
CPC classification number: G01S7/4815 , G01S7/4816 , G01S7/484 , G01S7/4865 , G01S17/026 , G01S17/10 , G01S17/89 , H01S5/005 , H01S5/02248 , H01S5/423
Abstract: An apparatus and a method are provided for 3-D imaging and scanning using a 2-D planar VCSELs source configured as a lightfiled optical source. VCSELs are configured in different 2-D spatial arrangements including single VCSEL, or preferably a group, cluster, or array each to be operated effectively as an independent VCSEL array source. A set of microlens and an imaging lens positioned at a pre-determined distance collimates radiation from each VCSEL array source to a set of parallel beams. The parallel beams from different VCSEL array sources generated in a rapid pre-determined timing sequence provide scanning beams to illuminate an object. The radiation reflected from the object is analyzed for arrival time, pulse shape, and intensity to determine a comprehensive set of distance and intensity profile of the object to compute a 3-D image.
Abstract translation: 提供了一种用于3-D成像和扫描的装置和方法，该二维平面VCSEL源被配置为光纤光源。 VCSEL被配置成不同的2-D空间布置，包括单个VCSEL，或者优选地，组，簇或阵列，每个可以有效地作为独立的VCSEL阵列源来操作。 以预定距离定位的一组微透镜和成像透镜将来自每个VCSEL阵列源的辐射准直到一组平行光束。 来自不同VCSEL阵列源的并行光束以快速预定的时序顺序产生，提供扫描光束以照亮物体。 分析从物体反射的辐射到达时间，脉冲形状和强度，以确定物体的距离和强度分布的一整套，以计算3-D图像。
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公开(公告)号：US20150362585A1
公开(公告)日：2015-12-17
申请号：US14304872
申请日：2014-06-13
Applicant: Princeton Optronics Inc.
Inventor： Chuni Lal Ghosh , Jean Francois Seurin , Laurence S. Watkins
CPC classification number: G01S7/4815 , G01S7/4816 , G01S7/484 , G01S7/4865 , G01S17/026 , G01S17/10 , G01S17/89 , H01S5/005 , H01S5/02248 , H01S5/423
Abstract: An apparatus and a method are provided for 3-D imaging and scanning using a 2-D planar VCSELs source configured as a lightfiled optical source. VCSELs are configured in different 2-D spatial arrangements including single VCSEL, or preferably a group, cluster, or array each to be operated effectively as an independent VCSEL array source. A set of microlens and an imaging lens positioned at a pre-determined distance collimates radiation from each VCSEL array source to a set of parallel beams. The parallel beams from different VCSEL array sources generated in a rapid pre-determined timing sequence provide scanning beams to illuminate an object. The radiation reflected from the object is analyzed for arrival time, pulse shape, and intensity to determine a comprehensive set of distance and intensity profile of the object to compute a 3-D image.
Abstract translation: 提供了一种用于3-D成像和扫描的装置和方法，该二维平面VCSEL源被配置为光纤光源。 VCSEL被配置成不同的2-D空间布置，包括单个VCSEL，或者优选地，组，簇或阵列，每个可以有效地作为独立的VCSEL阵列源来操作。 以预定距离定位的一组微透镜和成像透镜将来自每个VCSEL阵列源的辐射准直到一组平行光束。 来自不同VCSEL阵列源的并行光束以快速预定的时序顺序产生，提供扫描光束以照亮物体。 分析从物体反射的辐射到达时间，脉冲形状和强度，以确定物体的距离和强度分布的一整套，以计算3-D图像。
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公开(公告)号：US20150311673A1
公开(公告)日：2015-10-29
申请号：US14700010
申请日：2015-04-29
Applicant: Princeton Optronics Inc.
Inventor： Qing Wang , Jean-Francois Seurin , Chuni L Ghosh , Laurence S Watkins
CPC classification number: H01S5/18355 , H01L2224/16225 , H01L2224/48091 , H01L2224/73265 , H01S3/08068 , H01S5/0224 , H01S5/02248 , H01S5/0422 , H01S5/141 , H01S5/18305 , H01S5/1833 , H01S5/18361 , H01S5/1838 , H01S5/18383 , H01S5/18386 , H01S5/423 , H01L2924/00014
Abstract: A new VCSEL design is presented to achieve high output power and high brightness with a strong selection of a linear polarization state in high speed pulsing operation. Higher output power is achieved by including multiple gain segments in tandem, in the gain region. To achieve single mode operation with high output power, an extended cavity three reflector design is presented. High degree of polarization selectivity is achieved by a linear grating deployed with the third reflector, such that lasing is allowed only in a preferred linear polarization state. A polarization selective reflector including a linear grating is designed to impart strong polarization selectivity for a preferred linear polarization state. The polarization selective reflector used as the third reflector in an extended cavity VCSEL device, exhibits strong polarization selection for a preferred linear polarization state during high speed pulsing including in the gain switching resonance regime.
Abstract translation: 提出了一种新的VCSEL设计，以在高速脉冲操作中强烈地选择线性极化状态来实现高输出功率和高亮度。 通过在增益区域中串联地包括多个增益段来实现更高的输出功率。 为了实现高输出功率的单模操作，提出了一种扩展腔三反射器设计。 通过用第三反射器布置的线性光栅实现高度的偏振选择性，使得仅在优选的线性偏振状态下允许激光。 包括线性光栅的偏振选择反射器被设计成为优选的线性偏振状态赋予强极化选择性。 在扩展腔VCSEL器件中用作第三反射器的偏振选择反射器在包括增益切换谐振状态在内的高速脉冲期间表现出对于优选线偏振状态的强极化选择。
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