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11. 发明申请

US20100189145A1 LASER WITH GAIN MEDIUM SUPPRESSING HIGHER ORDER MODES TO PROVIDE LASING OUTPUT WITH HIGH BEAM QUALITY 有权
标题翻译：具有增益介质的激光可以抑制高光束质量的激光输出。
公开(公告)号：US20100189145A1
公开(公告)日：2010-07-29
申请号：US12752994
申请日：2010-04-01
申请人： Xiaoyuan Peng , Wensheng Ren
发明人： Xiaoyuan Peng , Wensheng Ren
IPC分类号： H01S3/14
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 to control the absorption coefficient less than 2 cm−1 such as the pumping wavelength between about 910 nm and about 920 nm, a doped vanadate laser may be enhanced to produce as much as 100 W of output power 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，可以增强掺杂的钒酸盐激光器以产生多达100W的输出功率而不会破裂晶体材料，同时减少40％的热透镜。

12. 发明申请

US20100177794A1 PULSE TEMPORAL PROGRAMMABLE ULTRAFAST BURST MODE LASER FOR MICROMACHINING 失效
标题翻译：脉冲时间可编程超声波激光模式激光
公开(公告)号：US20100177794A1
公开(公告)日：2010-07-15
申请号：US12354373
申请日：2009-01-15
申请人： Xiaoyuan Peng , Andrew Hooper
发明人： Xiaoyuan Peng , Andrew Hooper
IPC分类号： H01S3/10
CPC分类号： H01S3/2316 , B23K26/0624 , H01S3/06758 , H01S3/2383 , H01S5/0085 , H01S5/12 , H01S2301/08
摘要： A laser processing system provides a burst of ultrafast laser pulses having a selectively shaped burst envelope. A burst pulse laser includes a high repetition rate ultrafast laser to deliver a pulse train with each pulse in the train having an independently controlled amplitude. The respective amplitudes of each ultrafast pulse in a group define a “burst envelope.” In addition to independently controlling the amplitude of each ultrafast pulse within the burst envelope, the system may also provide selective control of spacing between each ultrafast pulse and/or the overall temporal width of the burst envelope. Thus, the system provides selective shaping of the burst envelope for particular laser processing applications.
摘要翻译：激光处理系统提供具有选择性形状的突发包络的超快激光脉冲的脉冲串。突发脉冲激光器包括高重复率超快速激光器，以传递脉冲串，列车中的每个脉冲具有独立控制的振幅。组中的每个超快速脉冲的相应幅度定义了“脉冲包络”。除了独立地控制脉冲包络内的每个超快脉冲的振幅之外，系统还可以提供对每个超快脉冲之间和/或突发包络的总时间宽度。因此，该系统为特定的激光处理应用提供了脉冲包络的选择性整形。

13. 发明申请

US20100118899A1 GENERATING LASER PULSES OF PRESCRIBED PULSE SHAPES PROGRAMMED THROUGH COMBINATION OF SEPARATE ELECTRICAL AND OPTICAL MODULATORS 有权
标题翻译：通过单独电气和光学调制器的组合生成规定的脉冲形状的激光脉冲
公开(公告)号：US20100118899A1
公开(公告)日：2010-05-13
申请号：US12268203
申请日：2008-11-10
申请人： Xiaoyuan Peng , David Barsic , William J. Jordens , Qi Wang
发明人： Xiaoyuan Peng , David Barsic , William J. Jordens , Qi Wang
IPC分类号： H01S3/10
CPC分类号： H01S3/06754 , H01S3/2316 , H01S3/2383 , H01S5/005 , H01S5/0092 , H01S5/0428 , H01S5/12
摘要： A programmable laser pulse combines electrical modulation of the pulse frequency and optical modulation of the pulse shape to form laser pulses of prescribed pulse shapes. A prescribed pulse shape features high peak power and low average power. The laser system disclosed also allows for power-scaling and nonlinear conversions to other (shorter or longer) wavelengths. The system provides an economical reliable alternative to using a laser source with high repetition rates to achieve shaped pulses at a variety of wavelengths. The combinatorial scheme disclosed is inherently more efficient than existing subtractive methods.
摘要翻译：可编程激光脉冲组合脉冲频率的电调制和脉冲形状的光调制形成规定脉冲形状的激光脉冲。规定的脉冲形状具有高峰值功率和低平均功率。所公开的激光系统还允许对其它（更短或更长）波长进行功率缩放和非线性转换。该系统提供了使用具有高重复率的激光源实现各种波长的成形脉冲的经济可靠的替代方案。所公开的组合方案固有地比现有的减法方法更有效。

14. 发明申请

US20140056321A1 OPTICAL AMPLIFIER AND PROCESS 审中-公开
标题翻译：光放大器和工艺
公开(公告)号：US20140056321A1
公开(公告)日：2014-02-27
申请号：US13592021
申请日：2012-08-22
申请人： XIAOYUAN PENG
发明人： XIAOYUAN PENG
IPC分类号： H01S3/10 , H01S3/14
CPC分类号： H01S3/0617 , H01S3/0606 , H01S3/061 , H01S3/0615 , H01S3/0941 , H01S3/09415 , H01S3/1611 , H01S3/1673 , H01S3/2316 , H01S3/2333 , H01S3/2341
摘要： An optical amplifier receives a seed laser having a wavelength of 1064 nm. Amplification occurs in a segmented Nd:YVO4 gain medium pumped with a pump source. Each segment of the gain medium has a length and dopant concentration and together the segments enhance power absorption in the gain medium enabling use of a higher power end pump which increases pulse energy and average power of the laser. The first end of the gain medium includes a wedge surface which arranges a quad-pass optical amplifier to achieve high extraction efficiency.
摘要翻译：光放大器接收波长为1064nm的种子激光器。在泵浦泵浦的分段Nd：YVO4增益介质中发生放大。增益介质的每个段具有长度和掺杂剂浓度，并且这些段一起增强增益介质中的功率吸收，使得能够使用增加激光器的脉冲能量和平均功率的较高功率端泵。增益介质的第一端包括楔形表面，其布置四通道光放大器以实现高提取效率。

15. 发明授权

US08309885B2 Pulse temporal programmable ultrafast burst mode laser for micromachining 失效
标题翻译：用于微加工的脉冲时间可编程超快脉冲模式激光器
公开(公告)号：US08309885B2
公开(公告)日：2012-11-13
申请号：US12354373
申请日：2009-01-15
申请人： Xiaoyuan Peng , Andrew Hooper
发明人： Xiaoyuan Peng , Andrew Hooper
IPC分类号： B23K26/06
CPC分类号： H01S3/2316 , B23K26/0624 , H01S3/06758 , H01S3/2383 , H01S5/0085 , H01S5/12 , H01S2301/08
摘要： A laser processing system provides a burst of ultrafast laser pulses having a selectively shaped burst envelope. A burst pulse laser includes a high repetition rate ultrafast laser to deliver a pulse train with each pulse in the train having an independently controlled amplitude. The respective amplitudes of each ultrafast pulse in a group define a “burst envelope.” In addition to independently controlling the amplitude of each ultrafast pulse within the burst envelope, the system may also provide selective control of spacing between each ultrafast pulse and/or the overall temporal width of the burst envelope. Thus, the system provides selective shaping of the burst envelope for particular laser processing applications.
摘要翻译：激光处理系统提供具有选择性形状的突发包络的超快激光脉冲的脉冲串。突发脉冲激光器包括高重复率超快速激光器，以传递脉冲串，列车中的每个脉冲具有独立控制的振幅。组中每个超快脉冲的相应幅度定义了一个脉冲包络。除了独立地控制突发包络内的每个超快脉冲的振幅之外，系统还可以提供对每个超快脉冲之间的间隔和/或突发包络的总时间宽度的选择性控制。因此，该系统为特定的激光处理应用提供了脉冲包络的选择性整形。

16. 发明申请

US20120092755A1 TANDEM PHOTONIC AMPLIFIER 有权
公开(公告)号：US20120092755A1
公开(公告)日：2012-04-19
申请号：US12374989
申请日：2007-07-25
申请人： Brian W. Baird , David M. Hemenway , Xiaoyuan Peng , Wensheng Ren
发明人： Brian W. Baird , David M. Hemenway , Xiaoyuan Peng , Wensheng Ren
IPC分类号： G02F1/365 , B23K26/00 , H01S3/091 , H01S3/10 , H01S3/067
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）。

17. 发明申请

US20110267671A1 COMBINING MULTIPLE LASER BEAMS TO FORM HIGH REPETITION RATE, HIGH AVERAGE POWER POLARIZED LASER BEAM 失效
标题翻译：组合多个激光束形成高重复率，高平均功率极化激光束
公开(公告)号：US20110267671A1
公开(公告)日：2011-11-03
申请号：US12934928
申请日：2009-03-27
申请人： Xiaoyuan Peng , William J. Jordens
发明人： Xiaoyuan Peng , William J. Jordens
IPC分类号： G02F1/03 , G02F1/35 , H01S3/067
CPC分类号： H01S3/2383 , H01S3/005 , H01S3/0085 , H01S3/0092 , H01S3/0941 , H01S3/10046 , H01S3/10061 , H01S3/115 , H01S3/117 , H01S5/0085 , H01S5/0092 , H01S5/4012 , H01S5/4025
摘要： Two pulsed lasers (14) or sets of lasers propagate beams of pulses (20) having orthogonally related polarization states. A beam combiner (24) combines the orthogonal beams to form a combined beam propagating along a common beam path (16) to intersect an optical modulator (30) that selectively changes the polarization state of selected pulses of either beam to provide a composite beam (18) including similarly polarized pulses from the orthogonal beams. The composite polarized beam has a composite average power and a composite repetition rate that are greater than those provided by either laser. The optical modulator can also selectively control the polarization states of pulses from either laser to pass through or be blocked by a downstream polarizer (32). Additional modulators may facilitate pulse shaping of the pulses. The system is scalable by addition of sets of single lasers or pairs of lasers with beam combiners and modulators.
摘要翻译：两个脉冲激光器（14）或一组激光器传播具有正交相关极化状态的脉冲（20）。光束组合器（24）组合正交光束以形成沿着公共光束路径（16）传播的组合光束以与选择性地改变任一光束的选定脉冲的偏振态的光调制器（30）相交，以提供复合光束 18）包括来自正交光束的类似偏振脉冲。复合极化光束具有大于由任一激光器提供的复合平均功率和复合重复率。光学调制器还可以选择性地控制来自任一激光器的脉冲的偏振态通过或被下游偏振器（32）阻挡。附加的调制器可以促进脉冲的脉冲整形。该系统通过添加单个激光器组或激光器组合与光束组合器和调制器可扩展。

18. 发明申请

US20110243163A1 WEDGE-FACETED NONLINEAR CRYSTAL FOR HARMONIC GENERATION 审中-公开
标题翻译：用于和谐生成的WEDGE-FACETED非线性晶体
公开(公告)号：US20110243163A1
公开(公告)日：2011-10-06
申请号：US12753609
申请日：2010-04-02
申请人： Xiaoyuan Peng , Haiwen Wang
发明人： Xiaoyuan Peng , Haiwen Wang
IPC分类号： G02F1/355 , G02F1/35 , G02F1/37 , H01S3/109
CPC分类号： G02F1/3534 , G02F1/3544 , H01S3/0092
摘要： Lasers and laser systems generate different wavelengths by nonlinear sum or difference frequency conversion. A wedge-faceted nonlinear crystal compensates for the spatial walk-off phenomenon associated with critical phase matching of a nonlinear crystal in the production of harmonic laser output at peak power.
摘要翻译：激光器和激光系统通过非线性或差分频率转换产生不同的波长。楔形非线性晶体补偿在峰值功率下产生谐波激光输出时非线性晶体的临界相位匹配相关的空间偏移现象。

19. 发明授权

US07817686B2 Laser micromachining using programmable pulse shapes 有权
标题翻译：激光微加工采用可编程脉冲形状
公开(公告)号：US07817686B2
公开(公告)日：2010-10-19
申请号：US12057264
申请日：2008-03-27
申请人： Xiaoyuan Peng , Brian W. Baird , William J. Jordens , David Martin Hemenway
发明人： Xiaoyuan Peng , Brian W. Baird , William J. Jordens , David Martin Hemenway
IPC分类号： H01S3/098
CPC分类号： H01S3/0057 , B23K26/0622 , G02F1/0327
摘要： Laser pulse shaping techniques produce tailored laser pulse spectral output. The laser pulses can be programmed to have desired pulse widths and pulse shapes (such as sub-nanosecond to 10 ns-20 ns pulse widths with 1 ns to several nanoseconds leading edge rise times). Preferred embodiments are implemented with one or more electro-optical modulators receiving drive signals that selectively change the amount of incident pulsed laser emission to form a tailored pulse output. Triggering the drive signal from the pulsed laser emission suppresses jitter associated with other stages of the link processing system and substantially removes jitter associated with pulsed laser emission build-up time.
摘要翻译：激光脉冲整形技术产生定制的激光脉冲光谱输出。激光脉冲可以被编程为具有期望的脉冲宽度和脉冲形状（例如，亚纳秒到10ns-20ns脉冲宽度，1ns至几纳秒前沿上升时间）。优选实施例是用一个或多个电光调制器来实现的，该电光调制器接收有选择地改变入射脉冲激光发射量的驱动信号以形成定制的脉冲输出。从脉冲激光发射器触发驱动信号抑制与链路处理系统的其他级相关联的抖动，并且基本上消除与脉冲激光发射建立时间相关联的抖动。

20. 发明授权

US07813394B2 Laser with gain medium suppressing higher order modes to provide lasing output with high beam quality 有权
标题翻译：具有增益介质的激光器抑制高阶模式，以提供具有高光束质量的激光输出
公开(公告)号：US07813394B2
公开(公告)日：2010-10-12
申请号：US12752994
申请日：2010-04-01
申请人： Xiaoyuan Peng , Wensheng Ren
发明人： Xiaoyuan Peng , Wensheng Ren
IPC分类号： H01S3/14
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 to control the absorption coefficient less than 2 cm−1 such as the pumping wavelength between about 910 nm and about 920 nm, a doped vanadate laser may be enhanced to produce as much as 100 W of output power 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，可以增强掺杂的钒酸盐激光器以产生多达100W的输出功率而不会破裂晶体材料，同时减少40％的热透镜。

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