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1. 发明申请

WO2009145971A1 MULTI-PASS OPTICAL POWER AMPLIFIER 审中-公开
标题翻译：多通道光功率放大器
公开(公告)号：WO2009145971A1
公开(公告)日：2009-12-03
申请号：PCT/US2009/037719
申请日：2009-03-19
申请人： ELECTRO SCIENTIFIC INDUSTRIES, INC. , PENG, Xiaoyuan , REN, Wensheng
发明人： PENG, Xiaoyuan , REN, Wensheng
IPC分类号： H01S5/04 , H01S5/026
CPC分类号： H01S3/2333 , H01S3/005 , H01S3/0064 , H01S3/061 , H01S3/1603 , H01S3/1623 , H01S3/163 , H01S3/1673 , H01S3/2316 , H01S3/2341
摘要： Anisotropic crystals such as Nd:YVO 4 , Nd:YLF, and Nd:GdVO 4 have become preferred gain materials for many laser applications. The anisotropic gain medium without ancillary compensation ensures there is no degradation of laser modes when passing through the gain medium. An optical power amplifier that incorporates an anisotropic gain medium achieves power scaling with multiple passes while also maintaining good mode matching between the laser and the pump during each pass. Preferred embodiments implement for multiple passes of a seed laser beam (100) through an anisotropic gain medium (102) with substantially zero angular beam displacement during each pass. The multi-pass system provides an economical, reliable method of achieving high TEM 00 power to meet the demands of micromachining, via drilling, and harmonic conversion applications.
摘要翻译：诸如Nd：YVO4，Nd：YLF和Nd：GdVO4的各向异性晶体已成为许多激光应用的优选增益材料。无辅助补偿的各向异性增益介质确保通过增益介质时激光模式不会降低。结合各向异性增益介质的光功率放大器实现多次通过的功率缩放，同时在每次通过期间也保持激光器和泵之间的良好模式匹配。优选实施例通过各向异性增益介质（102）的种子激光束（100）的多次通过实现，在每次通过期间基本上具有零角度的光束位移。多通道系统提供了一种经济可靠的方法，可实现高TEM00功率，以满足微加工，钻孔和谐波转换应用的需求。

2. 发明申请

WO2008014331A2 TANDEM PHOTONIC AMPLIFIER 审中-公开
公开(公告)号：WO2008014331A2
公开(公告)日：2008-01-31
申请号：PCT/US2007/074340
申请日：2007-07-25
申请人： ELECTRO SCIENTIFIC INDUSTRIES, INC. , BAIRD, Brian W. , HEMENWAY, David M. , PENG, Xioayuan , REN, Wensheng
发明人： BAIRD, Brian W. , HEMENWAY, David M. , PENG, Xioayuan , REN, Wensheng
IPC分类号： G02F1/017
CPC分类号： H01S3/2316 , B23K26/0622 , H01S3/0064 , H01S3/0085 , H01S3/06758 , H01S3/09408 , H01S3/0941 , H01S3/09415 , H01S3/10038 , H01S3/2333
摘要： Embodiments of laser systems advantageously use pulsed optical fiber-based laser source (12) output, the temporal pulse profile of which may be programmed to assume a range of pulse shapes. Pulsed fiber lasers are subject to peak power limits to prevent an onset of undesirable nonlinear effects; therefore, the laser output power of these devices is subsequently amplified in a diode-pumped solid state photonic power amplifier (DPSS-PA) (16). The DPSS PA provides for amplification of the desirable low peak power output of a pulsed fiber master oscillator power amplifier (14) to much higher peak power levels and thereby also effectively increases the available energy per pulse at a specified pulse repetition frequency. The combination of the pulsed fiber master oscillator power amplifier and the diode-pumped solid state power amplifier is referred to as a tandem solid state photonic amplifier (10).
摘要翻译：激光系统的实施例有利地使用基于脉冲光纤的激光源（12）输出，其时间脉冲轮廓可以被编程以假定一定范围的脉冲形状。脉冲光纤激光器受到峰值功率限制以防止发生不希望的非线性效应; 因此，这些器件的激光输出功率随后在二极管泵浦固态光子功率放大器（DPSS-PA）（16）中放大。 DPSS PA将脉冲光纤主振荡器功率放大器（14）的期望的低峰值功率输出放大到高得多的峰值功率水平，并由此也在指定的脉冲重复频率下有效地增加每脉冲的可用能量。脉冲光纤主振荡器功率放大器和二极管泵浦固态功率放大器的组合被称为串联固态光子放大器（10）。

3. 发明申请

WO2009120584A2 LASER WITH HIGHLY EFFICIENT GAIN MEDIUM 审中-公开
标题翻译：具有高效率增益介质的激光器
公开(公告)号：WO2009120584A2
公开(公告)日：2009-10-01
申请号：PCT/US2009/037717
申请日：2009-03-19
申请人： ELECTRO SCIENTIFIC INDUSTRIES, INC. , PENG, Xiaoyuan , REN, Wensheng
发明人： PENG, Xiaoyuan , REN, Wensheng
IPC分类号： H01S3/091 , H01S3/09
CPC分类号： H01S3/094 , H01S3/0606 , H01S3/10092 , H01S3/1603 , H01S3/1671
摘要： High-power, diode-pumped solid state (DPSS) pulsed lasers are preferred for applications such as micromachining, via drilling of integrated circuits, and ultraviolet (UV) conversion. Nd:YVO 4 (vanadate) lasers are good candidates for high power applications because they feature a high energy absorption coefficient over a wide bandwidth of pumping wavelengths. However, vanadate has poor thermo-mechanical properties, in that the material is stiff and fractures easily when thermally stressed. By optimizing laser parameters and selecting pumping wavelengths and doping a concentration of the gain medium (240) to control the absorption coefficient less than 2 cm-1 such as the pumping wavelength (241) between about 910 nm and about 920 nm, a doped vanadate laser (237, 240) may be enhanced to produce as much as 100 W of output power (236) without fracturing the crystal material, while delivering a 40% reduction in thermal lensing.
摘要翻译：高功率二极管泵浦固态（DPSS）脉冲激光器适用于微加工，集成电路钻孔和紫外（UV）转换等应用。 Nd：YVO4（钒酸盐）激光器是高功率应用的理想选择，因为它们在泵浦波长的宽带宽内具有高能量吸收系数。然而，钒酸盐具有较差的热机械性能，因为当热应力时材料很硬并且容易断裂。通过优化激光器参数并选择泵浦波长并掺杂增益介质（240）的浓度以控制小于2cm-1的吸收系数，例如在约910nm和约920nm之间的泵浦波长（241），掺杂钒酸盐激光器（237,240）可以被增强以产生高达100W的输出功率（236）而不会使晶体材料破裂，同时使热透镜效应降低40％。

4. 发明申请

WO2008014331A3 TANDEM PHOTONIC AMPLIFIER 审中-公开
公开(公告)号：WO2008014331A3
公开(公告)日：2008-10-23
申请号：PCT/US2007074340
申请日：2007-07-25
申请人： ELECTRO SCIENT IND INC , BAIRD BRIAN W , HEMENWAY DAVID M , PENG XIOAYUAN , REN WENSHENG
发明人： BAIRD BRIAN W , HEMENWAY DAVID M , PENG XIOAYUAN , REN WENSHENG
IPC分类号： H04B10/17 , H01S4/00
CPC分类号： H01S3/2316 , B23K26/0622 , H01S3/0064 , H01S3/0085 , H01S3/06758 , H01S3/09408 , H01S3/0941 , H01S3/09415 , H01S3/10038 , H01S3/2333
摘要： Embodiments of laser systems advantageously use pulsed optical fiber-based laser source (12) output, the temporal pulse profile of which may be programmed to assume a range of pulse shapes. Pulsed fiber lasers are subject to peak power limits to prevent an onset of undesirable nonlinear effects; therefore, the laser output power of these devices is subsequently amplified in a diode-pumped solid state photonic power amplifier (DPSS-PA) (16). The DPSS PA provides for amplification of the desirable low peak power output of a pulsed fiber master oscillator power amplifier (14) to much higher peak power levels and thereby also effectively increases the available energy per pulse at a specified pulse repetition frequency. The combination of the pulsed fiber master oscillator power amplifier and the diode-pumped solid state power amplifier is referred to as a tandem solid state photonic amplifier (10).
摘要翻译：激光系统的实施例有利地使用基于脉冲光纤的激光源（12）输出，其时间脉冲分布可被编程为呈现一定范围的脉冲形状。脉冲光纤激光器受到峰值功率限制，以防止发生不期望的非线性效应; 因此，这些器件的激光输出功率随后在二极管泵浦固态光子功率放大器（DPSS-PA）（16）中放大。 DPSS PA提供将脉冲光纤主振荡器功率放大器（14）的期望的低峰值功率输出放大到更高的峰值功率电平，从而也可以在指定的脉冲重复频率下有效地增加每个脉冲的可用能量。脉冲光纤主振荡器功率放大器和二极管泵浦固态功率放大器的组合被称为串联固态光子放大器（10）。

5. 发明申请

WO2009120584A3 LASER WITH HIGHLY EFFICIENT GAIN MEDIUM 审中-公开
标题翻译：激光具有高效的增益介质
公开(公告)号：WO2009120584A3
公开(公告)日：2009-11-26
申请号：PCT/US2009037717
申请日：2009-03-19
申请人： ELECTRO SCIENT IND INC , PENG XIAOYUAN , REN WENSHENG
发明人： PENG XIAOYUAN , REN WENSHENG
IPC分类号： H01S3/091 , H01S3/09
CPC分类号： H01S3/094 , H01S3/0606 , H01S3/10092 , H01S3/1603 , H01S3/1671
摘要： High-power, diode-pumped solid state (DPSS) pulsed lasers are preferred for applications such as micromachining, via drilling of integrated circuits, and ultraviolet (UV) conversion. Nd:YVO4 (vanadate) lasers are good candidates for high power applications because they feature a high energy absorption coefficient over a wide bandwidth of pumping wavelengths. However, vanadate has poor thermo-mechanical properties, in that the material is stiff and fractures easily when thermally stressed. By optimizing laser parameters and selecting pumping wavelengths and doping a concentration of the gain medium (240) to control the absorption coefficient less than 2 cm-1 such as the pumping wavelength (241) between about 910 nm and about 920 nm, a doped vanadate laser (237, 240) may be enhanced to produce as much as 100 W of output power (236) without fracturing the crystal material, while delivering a 40% reduction in thermal lensing.
摘要翻译：大功率，二极管泵浦固态（DPSS）脉冲激光器适用于微加工，通过钻孔集成电路和紫外线（UV）转换等应用。 Nd：YVO4（钒酸盐）激光器是高功率应用的理想选择，因为它们在宽带宽的泵浦波长下具有高能量吸收系数。然而，钒酸盐具有差的热机械性能，因为当热应力时材料是刚性的并且容易断裂。通过优化激光参数并选择泵浦波长并掺杂增益介质（240）的浓度以控制小于2cm -1的吸收系数，例如在约910nm和约920nm之间的泵浦波长（241），掺杂的钒酸盐激光器（237,240）可以被增强以产生高达100W的输出功率（236），而不破坏晶体材料，同时减少热透镜的40％。

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