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公开(公告)号：US07891821B2
公开(公告)日：2011-02-22
申请号：US11958127
申请日：2007-12-17
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。
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2.发明授权公开(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
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。
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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。
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公开(公告)号：US20090154518A1
公开(公告)日：2009-06-18
申请号：US11958127
申请日：2007-12-17
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。
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5.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。
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6.发明申请OPTICALLY-PUMPED EXTERNAL-CAVITY SURFACE-EMITTING SEMICONDUCTOR LASERS WITH FRONT-COOLED GAIN-STRUCTURES 有权具有前冷却增益结构的光泵浦外壳表面发射半导体激光器公开(公告)号：US20110064099A1
公开(公告)日：2011-03-17
申请号：US12558315
申请日：2009-09-11
CPC分类号： H01S5/183 , H01S3/07 , H01S3/08054 , H01S3/0816 , H01S3/083 , H01S3/1062 , H01S3/1066 , H01S5/0213 , H01S5/0217 , H01S5/02484 , H01S5/041 , H01S5/14
摘要： A semiconductor gain-structure functions as a gain-element in a laser-resonator. The gain-structure is bonded to a diamond heat-spreader that is peripherally cooled by a heat-sink configured to allow access to the gain-structure by laser-radiation circulating in the laser-resonator. In one example, the gain-structure is used as a transmissive gain-structure in a traveling-wave ring-resonator. In another example, the gain-structure surmounts a mirror-structure which functions as an end-mirror of a standing-wave laser-resonator.
摘要翻译： 半导体增益结构在激光谐振器中用作增益元件。 增益结构被结合到金刚石散热器，该金刚石散热器通过被配置为允许通过在激光谐振器中循环的激光辐射而进入增益结构的散热器周边地冷却。 在一个示例中，增益结构用作行波环形谐振器中的透射增益结构。 在另一示例中，增益结构克服了用作驻波激光谐振器的端镜的镜面结构。
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公开(公告)号：US07430071B2
公开(公告)日：2008-09-30
申请号：US11602147
申请日：2006-11-20
申请人： Bojan Resan , R. Russel Austin , Jason P. Watson
发明人： Bojan Resan , R. Russel Austin , Jason P. Watson
IPC分类号： G02B26/00
CPC分类号： G02F1/1313 , G02F2203/12 , G02F2203/26 , H01S3/0057
摘要： An optical pulse-shaper includes a prism, a delay line having positive optical power and a reflective spatial light modulator. In one arrangement the delay line has a selectively variable optical path length for accommodating pulses of different spectral bandwidth and positive optical power is provided by a concave mirror. In another arrangement, the delay line includes a zoom-mirror arranged to provide selectively variable optical power for accommodating pulses of different spectral bandwidth.
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8.发明申请公开(公告)号：US20070291801A1
公开(公告)日：2007-12-20
申请号：US11801538
申请日：2007-05-10
IPC分类号： H01S3/10
CPC分类号： G02F1/39 , H01S3/082 , H01S3/1083 , H01S3/109 , H01S5/14
摘要： An optically pumped semiconductor pumped optical parametric oscillator (OPS-pumped OPO) includes an OPS laser resonator and an OPO resonator A portion the OPS laser resonator axis and the OPO resonator axis are collinear. An optically nonlinear crystal is located in the coaxial portion of the resonators and arranged to frequency divide fundamental radiation generated in the OPS laser resonator into signal and idler radiations. In one arrangement, the OPO laser resonator is also an OPS resonator and is arranged to generate radiation at the wavelength of the signal radiation, with the idler radiation having the difference-frequency wavelength of the signal and fundamental radiations
摘要翻译： 光泵浦半导体泵浦光参量振荡器（OPS泵浦OPO）包括OPS激光谐振器和OPO谐振器A部分，OPS激光谐振器轴和OPO谐振器轴共线。 光学非线性晶体位于谐振器的同轴部分中，并被布置成将OPS激光谐振器中产生的基本辐射频率分频为信号和惰轮辐射。 在一种布置中，OPO激光谐振器也是OPS谐振器，并且被布置成在信号辐射的波长处产生辐射，其中惰轮辐射具有信号的差频波长和基波辐射
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公开(公告)号：US07300809B2
公开(公告)日：2007-11-27
申请号：US11194000
申请日：2005-07-29
CPC分类号： H01S5/041 , H01S5/026 , H01S5/028 , H01S5/0287 , H01S5/0288 , H01S5/0425 , H01S5/2231 , H01S5/4031 , H01S2304/00
摘要： A multilayer semiconductor laser includes a substrate on which is formed a semiconductor multilayer heterostructure divided into a plurality of electrically pumped regions and an elongated optically pumped region. The electrically pumped regions generate and deliver optical pump radiation laterally into the elongated optically pumped region. Output radiation is generated and delivered by the optically pumped region.
摘要翻译： 多层半导体激光器包括在其上形成分为多个电泵浦区域和细长的光泵浦区域的半导体多层异质结构的衬底。 电泵浦区域产生并将光泵浦辐射横向地传送到细长的光泵浦区域。 输出辐射由光泵浦区域产生和传送。
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公开(公告)号：US07254153B2
公开(公告)日：2007-08-07
申请号：US11193122
申请日：2005-07-29
IPC分类号： H01S3/083
CPC分类号： H01S3/109 , H01S3/07 , H01S3/0816 , H01S3/082 , H01S3/083 , H01S3/0941 , H01S3/1003 , H01S3/105 , H01S5/041 , H01S5/141 , H01S5/183 , H01S5/423
摘要： An optically pumped semiconductor laser includes an active ring-resonator having two or more optically pumped semiconductor (OPS) structures each including a mirror-structure and a multilayer gain-structure. The mirror-structures serve as fold mirrors for the resonator axis. An optically nonlinear crystal may be included in the ring-resonator for generating second-harmonic radiation from fundamental radiation generated in the resonator. Another optically nonlinear crystal may be provided for generating third-harmonic or fourth-harmonic radiation from the second-harmonic radiation. In one example, including a third-harmonic generating crystal, a passive ring-resonator partially coaxial with the active ring-resonator is provided for circulating second-harmonic radiation to provide resonant amplification of the second-harmonic radiation for enhancing third-harmonic conversion. Apparatus for automatically maintaining the passive ring-resonator in a resonant condition for the second-harmonic radiation is disclosed.
摘要翻译： 光泵浦半导体激光器包括具有两个或多个光泵浦半导体（OPS）结构的有源环形谐振器，每个结构包括镜面结构和多层增益结构。 镜结构用作谐振器轴的折叠镜。 环形谐振器中可以包括光学非线性晶体，用于从在谐振器中产生的基本辐射产生二次谐波辐射。 可以提供另一种光学非线性晶体用于从二次谐波辐射产生三次谐波或四次谐波辐射。 在一个示例中，包括三次谐波产生晶体，提供与有源环形谐振器部分同轴的无源环形谐振器，用于循环二次谐波辐射以提供用于增强三次谐波转换的二次谐波辐射的谐振放大。 公开了用于将二次谐波辐射的谐振条件下的无源环形谐振器自动维持的装置。
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