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1. 发明申请

WO2003043144A2 DIODE-PUMPED SOLID-STATE THIN SLAB LASER 审中-公开
标题翻译：二极管泵浦固体薄板激光器
公开(公告)号：WO2003043144A2
公开(公告)日：2003-05-22
申请号：PCT/US2002/036447
申请日：2002-11-13
申请人： SPECTRA PHYSICS, INC. , HODGSON, Norman , HOFFMAN, Hanna, J. , JORDAN, Wilhelm, A.
发明人： HODGSON, Norman , HOFFMAN, Hanna, J. , JORDAN, Wilhelm, A.
IPC分类号： H01S
CPC分类号： H01S3/0632 , H01S3/025 , H01S3/0407 , H01S3/042 , H01S3/08063 , H01S3/08081 , H01S3/094084 , H01S3/0941 , H01S3/11
摘要： An edge-pumped solid state thin slab laser apparatus is disclosed that is power scalable to well over 150 W for either multimode or near single transverse mode operation. A slab thickness is selected that is small enough to minimize thermal effects for a straight through beam yet large enough to allow efficient direct coupling of pump light from high power diode array stacks while also keeping the gain to within manageable levels for pulsed operation. Cooling of the slab is provided conductively, preferably by contact with metal blocks of high thermal conductivity. The edge-pumped solid state thin slab laser provides a near-one dimensional temperature gradient and heat flow direction that is perpendicular to the laser signal plane of propagation. The width of the slab is selected so as to maximize pump absorption length for a given laser material and both one and two-sided pumping schemes can be accommodated by the basic slab laser platform, depending on power, mode and beam quality requirements. The output power from the edge-pumped thin slab is generally scalable with slab length and the power available from diode array stacks used to pump the slab. The broad faces of the slab comprising the active medium may be coated with a material that is reflective at the pump wavelength or the slab can be sandwiched between two layers of dielectric of lower index of refraction so as to allow guiding of the pump light for better homogenization of the absorption, and hence the gain profile.
摘要翻译：公开了一种边缘泵浦固态薄板激光装置，对于多模式或接近单横模式操作，功率可伸缩至大于150W。选择的板坯厚度足够小以使直通梁的热效应最小化，但足够大以允许来自高功率二极管阵列堆叠的泵浦光的有效的直接耦合，同时还将增益保持在可管理的水平以用于脉冲操作。优选通过与导热性高的金属块接触来提供板坯的冷却。边缘泵浦固态薄板激光器提供垂直于激光信号传播平面的近一维温度梯度和热流方向。选择板坯的宽度以使给定激光材料的泵吸收长度最大化，并且根据功率，模式和光束质量要求，基板激光平台可以容纳单面和双面泵浦方案。来自边缘泵送的薄板坯的输出功率通常具有可扩展性，其具有板坯长度和用于泵送板坯的二极管阵列堆叠的功率。包含活性介质的板的宽面可以涂覆有在泵波长处反射的材料，或者板可以夹在较低折射率的两层电介质之间，以便允许泵浦光引导更好吸收的均匀化，因此增益曲线。

2. 发明申请

WO2004045034A1 DIODE-PUMPED SOLID-STATE THIN SLAB LASER 审中-公开
标题翻译：二极管泵浦固体薄板激光器
公开(公告)号：WO2004045034A1
公开(公告)日：2004-05-27
申请号：PCT/US2003/036744
申请日：2003-11-13
申请人： SPECTRA-PHYSICS, INC. , HODGSON, Norman , HOFFMAN, Hanna, J. , JORDAN, Wilhelm, A.
发明人： HODGSON, Norman , HOFFMAN, Hanna, J. , JORDAN, Wilhelm, A.
IPC分类号： H01S3/091
CPC分类号： H01S3/063 , H01S3/025 , H01S3/0407 , H01S3/042 , H01S3/0606 , H01S3/0612 , H01S3/0615 , H01S3/0625 , H01S3/0632 , H01S3/08059 , H01S3/08063 , H01S3/08081 , H01S3/09408 , H01S3/094084 , H01S3/0941 , H01S3/117 , H01S2301/20
摘要： An edge-pumped solid state thin slab laser apparatus is disclosed that is power scalable to well over 150 W for either multimode or near single transverse mode operation. A slab thickness is selected that is small enough to minimize thermal effects for a straight through beam yet large enough to allow efficient direct coupling of pump light from high power diode array stacks while also keeping the gain to within manageable levels for pulsed operation. Cooling of the slab is provided conductively, preferably by contact with metal blocks of high thermal conductivity. The edge-pumped solid state thin slab laser provides a near-one dimensional temperature gradient and heat flow direction that is perpendicular to the laser signal plane of propagation. The width of the slab is selected so as to maximize pump absorption length for a given laser material and both one and two-sided pumping schemes can be accommodated by the basic slab laser platform, depending on power, mode and beam quality requirements. The output power from the edge-pumped thin slab is generally scalable with slab length and the power available from diode array stacks used to pump the slab. The broad faces of the slab comprising the active medium may be coated with a material that is reflective at the pump wavelength or the slab can be sandwiched between two layers of dielectric of lower index of refraction so as to allow guiding of the pump light for better homogenization of the absorption, and hence the gain profile.
摘要翻译：公开了一种边缘泵浦固态薄板激光装置，对于多模式或接近单横模式操作，功率可伸缩至大于150W。选择的板坯厚度足够小以使直通梁的热效应最小化，但足够大以允许来自高功率二极管阵列堆叠的泵浦光的有效的直接耦合，同时还将增益保持在可管理的水平以用于脉冲操作。优选通过与导热性高的金属块接触来提供板坯的冷却。边缘泵浦固态薄板激光器提供垂直于激光信号传播平面的近一维温度梯度和热流方向。选择板坯的宽度以使给定激光材料的泵吸收长度最大化，并且根据功率，模式和光束质量要求，基板激光平台可以容纳单面和双面泵浦方案。来自边缘泵送的薄板坯的输出功率通常具有可扩展性，其具有板坯长度和用于泵送板坯的二极管阵列堆叠的功率。包含活性介质的板的宽面可以涂覆有在泵波长处反射的材料，或者板可以夹在较低折射率的两层电介质之间，以便允许泵浦光引导更好吸收的均匀化，因此增益曲线。

3. 发明申请

WO2003043144A3 DIODE-PUMPED SOLID-STATE THIN SLAB LASER 审中-公开
公开(公告)号：WO2003043144A3
公开(公告)日：2003-05-22
申请号：PCT/US2002/036447
申请日：2002-11-13
申请人： SPECTRA PHYSICS, INC. , HODGSON, Norman , HOFFMAN, Hanna, J. , JORDAN, Wilhelm, A.
发明人： HODGSON, Norman , HOFFMAN, Hanna, J. , JORDAN, Wilhelm, A.
IPC分类号： H01S3/06
摘要： An edge-pumped solid state thin slab laser apparatus is disclosed that is power scalable to well over 150 W for either multimode or near single transverse mode operation. A slab thickness is selected that is small enough to minimize thermal effects for a straight through beam yet large enough to allow efficient direct coupling of pump light from high power diode array stacks while also keeping the gain to within manageable levels for pulsed operation. Cooling of the slab is provided by contact with metal blocks. The edge-pumped solid state thin slab laser provides a near-one dimensional temperature gradient and heat flow direction that is perpendicular to the laser signal plane of propagation. The width of the slab is selected so as to maximize pump absorption length for a given laser material and both one and two-sided pumping schemes can be accommodated by the basic slab laser platform.

4. 发明申请

WO2002091075A1 ALGORITHM FOR ENHANCING THE LIFETIME OF CRITICAL COMPONENTS IN A LASER SYSTEM 审中-公开
标题翻译：提高激光系统关键部件寿命的算法
公开(公告)号：WO2002091075A1
公开(公告)日：2002-11-14
申请号：PCT/US2002/014851
申请日：2002-05-08
申请人： SPECTRA PHYSICS, INC. , GRUBER, Lukas , HODGSON, Norman , HOFFMAN, Hanna, J. , ANGSTENBERGER, Joerg
发明人： GRUBER, Lukas , HODGSON, Norman , HOFFMAN, Hanna, J. , ANGSTENBERGER, Joerg
IPC分类号： G02F1/35
CPC分类号： G02F1/3525
摘要： A method and system are described aimed at substantially increasing the lifetime of sensitive optical elements subjected to high power laser radiation. The lifetime enhancement is accomplished by spatially distributing the laser beam spots both globally and locally according to algorithms that are custom tailored to the subject element as well as the system and application needs. The methods of the invention are particularly well-suited to non-linear crystals used to convert radiation from high repetition rate, diode-pumped laser systems into the UV spectral range, where lifetime requirements are particularly challenging. The methods of the invention further enable effective utilization of available experimental data characterizing the element's performance in combination with a stored library of preferred spot scanning patterns that may be executed on the surface of the element according to the selected algorithm.
摘要翻译：描述了一种方法和系统，其目的在于大大增加经受高功率激光辐射的敏感光学元件的寿命。寿命增强是通过根据针对主题元素定制的算法以及系统和应用需求的全局和局部空间分布激光束斑点而实现的。本发明的方法特别适用于用于将来自高重复率，二极管泵浦激光系统的辐射转换成UV光谱范围的非线性晶体，其中寿命要求是特别具有挑战性的。本发明的方法还可以有效利用表征元件性能的可用实验数据，并结合存储的可根据所选算法在元件表面上执行的优选点扫描图案库。

5. 发明申请

WO2004068654A3 DIODE PUMPED LASER WITH INTRACAVITY HARMONICS 审中-公开
公开(公告)号：WO2004068654A3
公开(公告)日：2004-08-12
申请号：PCT/US2004/000490
申请日：2004-01-08
申请人： SPECTRA-PHYSICS, INC. , DUDLEY, David, R. , HODGSON, Norman , HOFFMAN, Hanna, J. , MEHL, Oliver
发明人： DUDLEY, David, R. , HODGSON, Norman , HOFFMAN, Hanna, J. , MEHL, Oliver
IPC分类号： H01S3/091
摘要： A diode end-pumped solid state laser (1) is provided which produces improved power output, long term stability and improved conversion efficiency from the pumping power, high as well as low power operation while maintaining certain desirable common characteristics such as TeM 00 operation, circular outputs readily aligned systems and compability with long lifetime for all components. The invention intracavity conversion to second (SH), third (TH) and higher harmonics in several different spectral regimes. The invention also addresses the aspects of design flexibility, seeking in certain embodiments to provide a single platform for providing several harmonic beams.

6. 发明申请

WO2009032044A1 FREQUENCY-CONVERTED HIGH-POWER LASER WITH RECIRCULATING POLARIZATION CONTROL 审中-公开
标题翻译：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：WO2009032044A1
公开(公告)日：2009-03-12
申请号：PCT/US2008/009504
申请日：2008-08-08
申请人： COHERENT, INC. , WANG, Gary, Y. , HODGSON, Norman , PANG, H., Yang , AUSTIN, R., Russel
发明人： WANG, Gary, Y. , HODGSON, Norman , PANG, H., Yang , AUSTIN, R., Russel
IPC分类号： H01S3/082 , H01S3/083 , H01S3/109 , G02F1/35 , H01S3/00 , H01S3/07 , H01S3/08 , H01S3/081 , H01S3/0941
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 (12A, 12B, 12C). The branches are optically connected with each other by one or more polarization-selective devices (29). Unpolarized fundamental radiation is generated by optically pumping a gain-element (26) in one branch of the resonator (12A). 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 (20,22) are located in one of the branches of the respnator 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 (52A, 52B) therebetween, and a three-branch ring-laser- resonator (70) are also disclosed. Another alternative laser comprises an intracavity SHG crystal (20). Fundamental and second harmonic radiation are emitted along the same path for external THG. A half waveplate (82) in, the first branch (12C) allows to vary the power of fundamental wavelength radiation for optimizing THG efficiency.
摘要翻译：频率三倍的激光谐振器具有三个谐振器支路（12A，12B，12C）。分支通过一个或多个偏振选择装置（29）彼此光学连接。通过在谐振器（12A）的一个分支中光学泵浦增益元件（26）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（20,22）位于振荡器的一个分支中，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学继电器（52A，52B）的两个增益元件和三分支环形激光谐振器（70）的三分支谐振器。另一种替代激光器包括腔内SHG晶体（20）。基波和二次谐波辐射沿外部THG的相同路径发射。第一分支（12C）中的半波片（82）允许改变基波长辐射的功率以优化THG效率。

7. 发明申请

WO2011163140A1 HYBRID FIBER PRE-AMPLIFIER AND THIN DISK MULTIPASS POWER AMPLIFIER 审中-公开
标题翻译：混合光纤预放大器和薄磁盘多功率放大器
公开(公告)号：WO2011163140A1
公开(公告)日：2011-12-29
申请号：PCT/US2011/041102
申请日：2011-06-20
申请人： COHERENT, INC. , HERTWIG, Michael , HODGSON, Norman , SPINELLI, Luis, A.
发明人： HERTWIG, Michael , HODGSON, Norman , SPINELLI, Luis, A.
IPC分类号： H01S3/094 , H01S3/23 , H01S3/04 , H01S3/06 , H01S3/067 , H01S3/0941 , H01S3/16
CPC分类号： H01S3/2316 , H01S3/005 , H01S3/0064 , H01S3/0405 , H01S3/0604 , H01S3/0621 , H01S3/06758 , H01S3/094053 , H01S3/094084 , H01S3/09415 , H01S3/1611 , H01S3/1673 , H01S3/2325 , H01S3/2341
摘要： A master oscillator power-amplifier stages includes multiple stages of fiber-amplification (34, 54, 58) with a final power amplifier stage in the form of a multi-pass amplifier (64). With a thin-disk gain medium (66) in one example the thin-disk amplifier includes a common optical arrangement (74, 76, 78, 120) for providing multiple incidences of radiation to be amplified and multiple incidences of a pump - radiation beam (70) on the thin-disk gain medium (66). The use of a thin-disk power amplifier allows to avoid non-linear pulse broadening, circumvents the need for a CPA while keeping the footprint of the MOPA small.
摘要翻译：主振荡器功率放大器级包括多级光纤放大（34,54,58），其具有多通道放大器形式的最终功率放大器级（64）。在一个示例中，使用薄盘增益介质（66），薄盘放大器包括用于提供待放大的多个辐射的多个发射率和泵辐射束的多次发射的公共光学装置（74,76,78,120）（70）在所述薄盘增益介质（66）上。使用薄磁盘功率放大器可以避免非线性脉冲展宽，避免了对CPA的需求，同时保持了MOPA的占位面积。

8. 发明申请

WO2011022333A2 PULSED FIBER-MOPA WITH WIDELY-VARIABLE PULSE-DURATION 审中-公开
标题翻译：具有宽可变脉冲持续时间的脉冲光纤
公开(公告)号：WO2011022333A2
公开(公告)日：2011-02-24
申请号：PCT/US2010/045625
申请日：2010-08-16
申请人： COHERENT, INC. , STARODOUMOV, Andrei , HODGSON, Norman
发明人： STARODOUMOV, Andrei , HODGSON, Norman
IPC分类号： H01S3/13 , H01S5/00 , H01S3/08 , H01S3/091
CPC分类号： H01S3/2308 , H01S3/0092 , H01S3/06754 , H01S3/11 , H01S3/2383
摘要： Master oscillator power amplifier (MOPA) apparatus includes two seed-pulse sources coupled to a single fiber amplifier including one or more stages of amplification. One of the seed-pulse sources is a single-mode source generating pulses having a duration selectively variable between about 0.1 ns and 10 ns. The other seed-pulse source is a multi-mode source generating pulses having a duration selectively variable between about 1 ns and 10 μs. Selectively operating one or the other of the seed-pulse sources provides that the apparatus can deliver pulses selectively variable in a range between about 0.1 ns and 10 μs.
摘要翻译：主振荡器功率放大器（MOPA）装置包括耦合到包括一个或多个放大级的单个光纤放大器的两个种子脉冲源。种子脉冲源中的一个是单模源产生脉冲，其持续时间选择性地在约0.1ns和10ns之间变化。另一个种子脉冲源是产生具有约1ns至10μs之间选择性变化的持续时间的脉冲的多模式源。选择性地操作种子脉冲源中的一个或另一个提供了该设备可以递送在约0.1ns和10μs之间的范围内选择性变化的脉冲。

9. 发明申请

WO2010074869A1 FREQUENCY-TRIPLED FIBER MOPA 审中-公开
公开(公告)号：WO2010074869A1
公开(公告)日：2010-07-01
申请号：PCT/US2009/065579
申请日：2009-11-23
申请人： COHERENT, INC. , STARODOUMOV, Andrei , HODGSON, Norman , SIMANOVSKI, Dmitri , AUSTIN, R., Russel
发明人： STARODOUMOV, Andrei , HODGSON, Norman , SIMANOVSKI, Dmitri , AUSTIN, R., Russel
IPC分类号： G02F1/35 , H01S3/23 , H01S3/067
CPC分类号： G02F1/3532 , G02F2001/354 , H01S3/06754 , H01S3/2316 , H01S3/2383
摘要： Fundamental- wavelength pulses from a fiber of a laser are divided into two portions and the two portions are separately amplified. One of the amplified fundamental- wavelength pulse-portions is frequency-doubled. The frequency doubled portion is sum- frequency mixed with the other amplified fundamental wavelength pulse-portions to provide third-harmonic radiation pulses.
摘要翻译：来自激光光纤的基波长脉冲被分成两部分，两部分被分开放大。放大的基波长脉冲部分之一被倍频。倍频部分与其他放大的基波长脉冲部分进行和频混频，以提供三次谐波辐射脉冲。

10. 发明申请

WO2012138524A1 TRANSITION-METAL-DOPED THIN-DISK LASER 审中-公开
标题翻译：过渡金属多孔薄磁盘激光器
公开(公告)号：WO2012138524A1
公开(公告)日：2012-10-11
申请号：PCT/US2012/031011
申请日：2012-03-28
申请人： COHERENT, INC. , HODGSON, Norman , HERTWIG, Michael , PANG, H., Yang
发明人： HODGSON, Norman , HERTWIG, Michael , PANG, H., Yang
IPC分类号： H01S3/042 , H01S3/06 , H01S3/094 , H01S3/04 , H01S3/081 , H01S3/16 , H01S3/23 , H01S3/02
CPC分类号： H01S3/04 , H01S3/025 , H01S3/0405 , H01S3/0407 , H01S3/042 , H01S3/0604 , H01S3/0621 , H01S3/0623 , H01S3/0816 , H01S3/094038 , H01S3/094076 , H01S3/094084 , H01S3/11 , H01S3/16 , H01S3/1625 , H01S3/1636 , H01S3/235
摘要： A laser includes a Ti : sapphire gain-medium (18) in the form of a thin-disk. The thin-disk gain-medium is optically pumped by pump - radiation pulses (12) having a wavelength in the green region of the electromagnetic spectrum. The pump - radiation pulses have a duration less than twice the excited- state lifetime of the gain-medium. Multipass pumping is realized with pump mirrors (40, 42) and the thin-disk (18) is mounted via a diamond heat spreader (28) on a water cooled copper heat sink (22,24). For thermal management, low doping and large pump spots are used.
摘要翻译：激光器包括薄的形式的Ti：蓝宝石增益介质（18）。薄磁盘增益介质通过在电磁频谱的绿色区域中具有波长的泵浦辐射脉冲（12）进行光泵浦。泵 - 辐射脉冲的持续时间小于增益介质的激发态寿命的两倍。多泵泵送由泵反射镜（40,42）实现，并且薄盘（18）通过金刚石散热器（28）安装在水冷铜散热器（22,24）上。对于热管理，使用低掺杂和大泵点。

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