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    Frequency-converted high-power laser with recirculating polarization control
    1.
    发明授权
    Frequency-converted high-power laser with recirculating polarization control 有权
    具有再循环偏振控制的变频大功率激光器

    公开(公告)号：US07505491B1

    公开(公告)日：2009-03-17

    申请号：US11897369

    申请日：2007-08-29

    申请人： Gary Y. Wang ,  Norman Hodgson ,  H. Yang Pang ,  R. Russel Austin

    发明人： Gary Y. Wang ,  Norman Hodgson ,  H. Yang Pang ,  R. Russel Austin

    IPC分类号： H01S3/10 ,  H01S3/081 ,  H01S3/082

    CPC分类号： H01S3/082 ,  G02F2001/354 ,  H01S3/005 ,  H01S3/07 ,  H01S3/08054 ,  H01S3/08072 ,  H01S3/08086 ,  H01S3/0813 ,  H01S3/083 ,  H01S3/0941 ,  H01S3/109 ,  H01S3/11 ,  H01S3/127

    摘要： A frequency-tripled laser-resonator has three resonator-branches. The branches are optically connected with each other by one or more polarization-selective devices. Unpolarized fundamental radiation is generated by optically pumping a gain-element in one branch of the resonator. The polarization-selective device provides that radiation in the other branches is plane-polarized, with the polarization planes of radiation entering the branches perpendicular to each other. Two optically nonlinear crystals are located in one of the branches of the resonator in which the fundamental radiation is plane-polarized and arranged to generate third-harmonic radiation. Three-branch resonators including two gain-elements having a optical relay therebetween, and a three-branch ring-laser-resonator are also disclosed.

    摘要翻译： 频率三倍的激光谐振器具有三个谐振器支路。 分支通过一个或多个偏振选择装置彼此光学连接。 通过在谐振器的一个支路中光学地泵浦增益元件来产生非偏振的基本辐射。 偏振选择装置提供其他分支中的辐射是平面偏振的，辐射的偏振面进入彼此垂直的分支。 两个光学非线性晶体位于谐振器的一个分支中，其中基本辐射是平面偏振的并且被布置成产生三次谐波辐射。 还公开了包括其间具有光中继器的两个增益元件和三分支环形激光谐振器的三分支谐振器。

    FREQUENCY-CONVERTED HIGH-POWER LASER WITH RECIRCULATING POLARIZATION CONTROL
    2.
    发明申请
    FREQUENCY-CONVERTED HIGH-POWER LASER WITH RECIRCULATING POLARIZATION CONTROL 有权
    频率转换高功率激光器，具有重新调节极化控制

    公开(公告)号：US20090059974A1

    公开(公告)日：2009-03-05

    申请号：US11897369

    申请日：2007-08-29

    申请人： Gary Y. Wang ,  Norman Hodgson ,  H. Yang Pang ,  R. Russel Austin

    发明人： Gary Y. Wang ,  Norman Hodgson ,  H. Yang Pang ,  R. Russel Austin

    IPC分类号： H01S3/10

    CPC分类号： H01S3/082 ,  G02F2001/354 ,  H01S3/005 ,  H01S3/07 ,  H01S3/08054 ,  H01S3/08072 ,  H01S3/08086 ,  H01S3/0813 ,  H01S3/083 ,  H01S3/0941 ,  H01S3/109 ,  H01S3/11 ,  H01S3/127

    摘要： A frequency-tripled laser-resonator has three resonator-branches. The branches are optically connected with each other by one or more polarization-selective devices. Unpolarized fundamental radiation is generated by optically pumping a gain-element in one branch of the resonator. The polarization-selective device provides that radiation in the other branches is plane-polarized, with the polarization planes of radiation entering the branches perpendicular to each other. Two optically nonlinear crystals are located in one of the branches of the resonator in which the fundamental radiation is plane-polarized and arranged to generate third-harmonic radiation. Three-branch resonators including two gain-elements having a optical relay therebetween, and a three-branch ring-laser-resonator are also disclosed.

    摘要翻译： 频率三倍的激光谐振器具有三个谐振器支路。 分支通过一个或多个偏振选择装置彼此光学连接。 通过在谐振器的一个支路中光学地泵浦增益元件来产生非偏振的基本辐射。 偏振选择装置提供其他分支中的辐射是平面偏振的，辐射的偏振面进入彼此垂直的分支。 两个光学非线性晶体位于谐振器的一个分支中，其中基本辐射是平面偏振的并且被布置成产生三次谐波辐射。 还公开了包括其间具有光中继器的两个增益元件和三分支环形激光谐振器的三分支谐振器。

    Laser beam transformer and projector having stacked plates
    3.
    发明授权
    Laser beam transformer and projector having stacked plates 失效
    激光束变压器和具有堆叠板的投影机

    公开(公告)号：US07891821B2

    公开(公告)日：2011-02-22

    申请号：US11958127

    申请日：2007-12-17

    申请人： H. Yang Pang ,  Murray K. Reed ,  Alexander O. W. Wiessner ,  R. Russel Austin

    发明人： H. Yang Pang ,  Murray K. Reed ,  Alexander O. W. Wiessner ,  R. Russel Austin

    IPC分类号： G03B21/14 ,  G02B27/10

    CPC分类号： H01S3/005 ,  G02B27/0905 ,  G02B27/0961 ,  H01S5/4012

    摘要： An original laser-radiation beam having a symmetrical M2 but poor beam quality is sliced in one transverse axis, by a fanned-out stack of parallel transparent plates, into a plurality of beam slices. The beam-slices are also spread by the stack of plates in another transverse axis perpendicular to the first axis. A fanned-out stack of glass blocks aligns the spread beam-slices in the first axis to form what is effectively a single beam having an asymmetric M2, with beam quality improved in one axis and degraded in the other compared with the original beam. The effective single beam is projected into a line of radiation by a cylindrical lens, or by a homogenizing projector including spaced apart cylindrical lens arrays followed by a spherical condenser lens.

    摘要翻译： 具有对称M2但差的光束质量的原始激光辐射束在一个横向轴线上通过平行的平行透明板的扇形叠层切割成多个光束切片。 光束切片也在垂直于第一轴线的另一个横向轴上的板堆叠扩展。 玻璃块的扇形排列将扩展的光束片在第一轴上对准以形成具有不对称M2的单个光束，其中一个轴上的光束质量得到改善并且与原始光束相比在另一个轴上劣化。 有效的单光束通过柱面透镜投射到辐射线中，或者通过均匀化的投影仪投影，其包括间隔开的柱面透镜阵列，随后是球面聚光透镜。

    Time correlation of ultrafast laser pulses
    4.
    发明授权
    Time correlation of ultrafast laser pulses 有权
    超快激光脉冲的时间相关性

    公开(公告)号：US07038781B2

    公开(公告)日：2006-05-02

    申请号：US10676679

    申请日：2003-10-01

    申请人： H. Yang Pang ,  R. Russel Austin

    发明人： H. Yang Pang ,  R. Russel Austin

    IPC分类号： G01B9/02

    CPC分类号： G01J11/00 ,  H01S3/10053 ,  H01S3/105 ,  H01S3/106 ,  H01S3/1394 ,  H01S3/2383

    摘要： Time-correlation methods for determining pulse characteristics from a modelocked ultrafast laser include a cross-correlation method and an auto-correlation method. In the cross-correlation method, pulses from the laser and pulses from another modelocked laser are incident on a two-photon detector that responds when the pulses overlap in time. The lasers are synchronized to the same frequency and the phase difference between pulses from the two lasers is varied to vary the temporal pulse overlap while recording the detector response. Pulse characteristics are determined from recorded data representing the detector response as a function of phase difference. In the auto-correlation method, pulses from one laser are divided into two components. One component follows a fixed delay path before being temporally overlapped at the detector with another component that has not been delayed. The temporal overlap is varied by varying the pulse repetition frequency. Pulse characteristics are determined from recorded data representing the detector response as a function of phase difference.

    摘要翻译： 用于从锁模超快激光器确定脉冲特性的时间相关方法包括互相关方法和自相关方法。 在互相关方法中，来自激光器的脉冲和来自另一个锁模激光器的脉冲入射在双光子检测器上，当脉冲在时间上重叠时响应。 激光器被同步到相同的频率，并且来自两个激光器的脉冲之间的相位差被改变以在记录检测器响应的同时改变时间脉冲重叠。 根据表示作为相位差的函数的检测器响应的记录数据确定脉冲特性。 在自相关方法中，来自一个激光器的脉冲被分成两部分。 一个组件遵循固定的延迟路径，然后在未被延迟的另一个组件在检测器处暂时重叠。 通过改变脉冲重复频率来改变时间重叠。 根据表示作为相位差的函数的检测器响应的记录数据确定脉冲特性。

    LASER BEAM TRANSFORMER AND PROJECTOR
    5.
    发明申请
    LASER BEAM TRANSFORMER AND PROJECTOR 失效
    激光束变压器和投影仪

    公开(公告)号：US20090154518A1

    公开(公告)日：2009-06-18

    申请号：US11958127

    申请日：2007-12-17

    申请人： H. Yang Pang ,  Murray K. Reed ,  Alexander O.W. Wiessner ,  R. Russel Austin

    发明人： H. Yang Pang ,  Murray K. Reed ,  Alexander O.W. Wiessner ,  R. Russel Austin

    IPC分类号： H01S3/08

    CPC分类号： H01S3/005 ,  G02B27/0905 ,  G02B27/0961 ,  H01S5/4012

    摘要： An original laser-radiation beam having a symmetrical M2 but poor beam quality is sliced in one transverse axis, by a fanned-out stack of parallel transparent plates, into a plurality of beam slices. The beam-slices are also spread by the stack of plates in another transverse axis perpendicular to the first axis. A fanned-out stack of glass blocks aligns the spread beam-slices in the first axis to form what is effectively a single beam having an asymmetric M2, with beam quality improved in one axis and degraded in the other compared with the original beam. The effective single beam is projected into a line of radiation by a cylindrical lens, or by a homogenizing projector including spaced apart cylindrical lens arrays followed by a spherical condenser lens.

    摘要翻译： 具有对称M2但差的光束质量的原始激光辐射束在一个横向轴线上通过平行的平行透明板的扇形叠层切割成多个光束切片。 光束切片也在垂直于第一轴线的另一个横向轴上的板堆叠扩展。 玻璃块的扇形排列将扩展的光束片在第一轴上对准以形成具有不对称M2的单个光束，其中一个轴上的光束质量得到改善并且与原始光束相比在另一个轴上劣化。 有效的单光束通过柱面透镜投射到辐射线中，或者通过均匀化的投影仪投影，其包括间隔开的柱面透镜阵列，随后是球面聚光透镜。

    Passively modelocked harmonic-generating laser
    6.
    发明授权
    Passively modelocked harmonic-generating laser 失效
    被动闭锁谐波发生激光

    公开(公告)号：US06590911B1

    公开(公告)日：2003-07-08

    申请号：US09586096

    申请日：2000-06-02

    申请人： Luis A. Spinelli ,  Andrea Caprara ,  Gary Y. Wang ,  R. Russel Austin

    发明人： Luis A. Spinelli ,  Andrea Caprara ,  Gary Y. Wang ,  R. Russel Austin

    IPC分类号： H01S310

    CPC分类号： H01S3/1112 ,  H01S3/108 ,  H01S3/109

    摘要： A laser includes a resonator terminated by first and second mirrors and including a gain medium providing fundamental radiation. A first optically-nonlinear element is located in the resonator. The first optically-nonlinear element is cooperatively arranged with the first mirror to provide passive modelocking of the fundamental radiation by sequentially converting a first portion of the circulating fundamental radiation to second-harmonic radiation and reconverting a first portion of the second-harmonic radiation to fundamental radiation. A second optically-nonlinear element is arranged to convert a second portion of the second-harmonic radiation to either third-harmonic radiation or fourth-harmonic radiation.

    摘要翻译： 激光器包括由第一和第二反射镜端接并包括提供基本辐射的增益介质的谐振器。 第一光学非线性元件位于谐振器中。 第一光学非线性元件与第一反射镜配合配置，以通过将循环基本辐射的第一部分顺序地转换成二次谐波辐射并将二次谐波辐射的第一部分重新转换为基本光束来提供基本辐射的被动锁模 辐射。 第二光学非线性元件被布置成将二次谐波辐射的第二部分转换成三次谐波辐射或四次谐波辐射。