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1. 发明申请

WO2015041827A3 VIA-HOLE DRILLING IN A PRINTED CIRCUIT BOARD USING A CARBON MONOXIDE LASER 审中-公开
标题翻译：使用一氧化碳激光器的印刷电路板中的透孔钻孔
公开(公告)号：WO2015041827A3
公开(公告)日：2015-05-14
申请号：PCT/US2014053129
申请日：2014-08-28
申请人： COHERENT INC
发明人： HUA GONGXUE , MUELLER ERIC R
IPC分类号： B23K26/06 , B23K26/38 , H05K3/00
CPC分类号： H05K3/0026 , B23K26/0622 , B23K26/0643 , B23K26/0652 , B23K26/382 , B23K26/40 , B23K26/704 , B23K2201/42 , B23K2203/50
摘要： Apparatus (10) for drilling a via-hole in a printed circuit board (PCB) (74) includes a carbon monoxide laser (12) deliver laser radiation pulses. The pulses have a relatively broad wavelength-range, and slow rising and falling edges. The rising and falling edges of the pulses are clipped using and acousto-optic modulator (52). A dispersion- compensator (64) compensates for dispersion in the clipped pulses introduced by the AOM (52). Achromatic focusing optics (70) focus the dispersion-compensated, clipped pulses on the PCB (74) for the via- hole drilling.
摘要翻译：用于在印刷电路板（PCB）（74）中钻孔通孔的装置（10）包括一氧化碳激光器（12）传送激光辐射脉冲。脉冲具有相对较宽的波长范围，并且缓慢的上升和下降沿。使用声光调制器（52）对脉冲的上升和下降沿进行限幅。色散补偿器（64）补偿由AOM（52）引入的限幅脉冲中的色散。消色差聚焦光学器件（70）将色散补偿的限幅脉冲聚焦在PCB（74）上用于通孔钻孔。

2. 发明申请

WO2009029164A2 APPARATUS FOR PROVIDING MULTIPLE INDEPENDENTLY CONTROLLABLE BEAMS FROM A SINGLE LASER OUTPUT BEAM AND DELIVERING THE MULTIPLE BEAMS VIA OPTICAL FIBERS 审中-公开
标题翻译：用于从单个激光输出光束提供多个独立的可控制光束并通过光纤馈送多个光束的装置
公开(公告)号：WO2009029164A2
公开(公告)日：2009-03-05
申请号：PCT/US2008009501
申请日：2008-08-08
申请人： COHERENT INC , MICHAUD RAYMOND , MUELLER ERIC R
发明人： MICHAUD RAYMOND , MUELLER ERIC R
IPC分类号： B23K26/03 , B23K26/04 , B23K26/067 , G02B6/24 , G02B6/255 , G02B6/36
CPC分类号： B23K26/067 , B23K26/0626 , B23K26/0676 , B23K26/705 , G02B6/4296 , G02F1/113 , G02F1/33
摘要： An output beam from a laser is directed into an acousto-optic cell. The acousto- optic cell is driven by RF voltages at four different frequencies. A portion of the laser output beam is diffracted by the acousto-optic cell at four different angles to the laser output beam. This provides four secondary beams. The magnitude of the RF voltages applied to the acousto-optic cell and the power in the laser output beam may be cooperatively varied to provide a predetermined power in each of the secondary beams. The four secondary beams are directed into four beam separating optical fibers connected to four transport optical fibers for transporting the secondary beams to a location remote from the laser. Power in the beams is monitored at the output ends of the four optical fibers for controlling the magnitude of the RF voltages. All four beams are focused into the beam-separating fibers by a single lens.
摘要翻译：来自激光器的输出光束被引导到声光电池中。声光单元由四个不同频率的RF电压驱动。激光输出光束的一部分被声光单元以与激光输出光束四个不同角度衍射。这提供了四个辅助光束。施加到声光单元的RF电压的大小和激光输出光束中的功率可以协调地变化，以在每个次级光束中提供预定的功率。四个次级光束被引导到连接到四个传输光纤的四个光束分离光纤中，用于将次光束传送到远离激光的位置。在四根光纤的输出端监视光束的功率，用于控制RF电压的幅度。所有四个光束通过单个透镜聚焦到光束分离光纤中。

3. 发明申请

WO03073568A2 LASER MODULATION AND Q-SWITCHING USING AN INVERSE FABRY-PEROT FILTER 审中-公开
标题翻译：激光调制和Q开关使用反相机滤波器
公开(公告)号：WO03073568A2
公开(公告)日：2003-09-04
申请号：PCT/US0305509
申请日：2003-02-21
申请人： COHERENT INC
发明人： MUELLER ERIC R
IPC分类号： H01S3/08 , H01S3/081 , H01S3/121 , H01S3/223 , H01S5/00
CPC分类号： H01S3/121 , H01S3/08009 , H01S3/08059 , H01S3/0812 , H01S3/2232
摘要： A laser includes an external modulation device including two spaced-apart wire-grids. The device has a reflectivity peak at a wavelength dependent on the spacing between the wire grids. The device is arranged to reflect and transmit radiation received from the laser. The reflected and transmitted radiation are modulated by varying the spacing between the wire-grid polarizers. The device may be used as an end mirror or a fold mirror of a laser resonator and operated as a Q-switch for the laser resonator. Q-switching is accomplished by varying the reflectivity of the device at the lasing wavelength from below to above a threshold reflectivity value for lasing.
摘要翻译：激光器包括包括两个间隔开的线栅的外部调制装置。该器件在取决于线栅之间的间距的波长处具有反射率峰值。该装置被布置成反射和发射从激光器接收的辐射。通过改变线栅偏振器之间的间距来调制反射和透射的辐射。该器件可以用作激光谐振器的端镜或折光镜，并且作为用于激光谐振器的Q开关来操作。通过将激光波长的器件的反射率从下方改变到高于用于激光的阈值反射率值来实现Q切换。

4. 发明申请

WO2008045019A3 PULSED RF HIGH PRESSURE CO 审中-公开
标题翻译：脉冲RF高压CO
公开(公告)号：WO2008045019A3
公开(公告)日：2009-10-29
申请号：PCT/US2006027080
申请日：2006-07-12
申请人： COHERENT INC , LAUGHMAN LANNY , SEGUIN VERNON , CHENAUSKY PETER P , HENSCHKE ROBERT , MUELLER ERIC R
发明人： LAUGHMAN LANNY , SEGUIN VERNON , CHENAUSKY PETER P , HENSCHKE ROBERT , MUELLER ERIC R
IPC分类号： H01S3/03 , H01S3/038 , H01S3/0975 , H01S3/223
CPC分类号： H01S3/2232 , H01S3/0315 , H01S3/0385 , H01S3/041 , H01S3/076 , H01S3/0975
摘要： An improved laser system includes a sealed-off, RF excited, diffusion cooled, high pressure, short pulsed, high peak power waveguide and slab CO2 laser that avoids problems typically associated with obtaining a diffused discharge at high gas pressures, without arcing and without corona, while maintaining the unsaturated gain and gas temperature experienced at low pressures and scaling to higher pressures. Such a system has a long operating life-time, and is capable of operation at high gas pressures to obtain relative fast rise and fall time pulses. The system emits relatively short pulse widths, with pulse energies up to and exceeding 30 mJ, with reasonably high pulse repetition rates. The system also has a low pulsed RF power duty cycle, thereby enabling the generation of high peak power pulses, as well as reasonable average power and reasonably high peak powers.
摘要翻译：改进的激光系统包括密封的，RF激发的，扩散冷却的，高压的，短脉冲的，高峰值功率波导和平板CO 2激光器，其避免了在高气压下获得扩散放电的问题，没有电弧和没有电晕同时保持在低压下经历的不饱和增益和气体温度，并将其缩放到较高的压力。这样的系统具有长的使用寿命，并且能够在高气体压力下操作以获得相对快速的上升和下降时间脉冲。系统发射脉冲宽度相对较短，脉冲能量可达30 mJ，脉冲重复率相当高。该系统还具有低脉冲RF功率占空比，从而能够产生高峰值功率脉冲，以及合理的平均功率和合理的高峰值功率。

5. 发明申请

WO2007145933A3 INCOHERENT COMBINATION OF LASER BEAMS 审中-公开
标题翻译：激光束的组合
公开(公告)号：WO2007145933A3
公开(公告)日：2008-03-13
申请号：PCT/US2007013218
申请日：2007-06-05
申请人： COHERENT INC , FONTANELLA JOEL , BROWN DAVID E , MUELLER ERIC R , MICHAUD RAYMOND
发明人： FONTANELLA JOEL , BROWN DAVID E , MUELLER ERIC R , MICHAUD RAYMOND
IPC分类号： B23K26/06 , B23K26/073
CPC分类号： H01S3/2383 , B23K26/0604 , B23K26/0738 , H01S3/005 , H01S3/10 , H01S3/105 , H01S3/2232 , H01S5/0652 , H01S5/4012
摘要： A method of combining beams from a plurality of laser resonators includes frequency modulating the output of each of the lasers with one or more of the lasers frequency modulated out-of-phase with the others. The frequency modulated beams are directed along parallel spaced-apart paths and overlap in a plane along the paths to form a combined beam having a flat-topped intensity distribution.
摘要翻译：一种组合来自多个激光谐振器的光束的方法包括使用与其它激光器频率调制的不同相位的一个或多个激光器对每个激光器的输出进行频率调制。频率调制光束沿着平行的间隔开的路径被引导并沿着路径在平面中重叠以形成具有平顶强度分布的组合光束。

6. 发明申请

WO2008024094A2 HIGH DAMAGE THRESHOLD Q-SWITCHED CO2 LASER 审中-公开
标题翻译：高损耗阈值Q开关CO2激光器
公开(公告)号：WO2008024094A2
公开(公告)日：2008-02-28
申请号：PCT/US2006026681
申请日：2006-07-07
申请人： COHERENT INC , HUA CONGXUE , SEGUIN VERNON , NEWMAN LEON A , MUELLER ERIC R
发明人： HUA CONGXUE , SEGUIN VERNON , NEWMAN LEON A , MUELLER ERIC R
IPC分类号： H01S3/115
CPC分类号： H01S3/2232 , H01S3/08054 , H01S3/08095 , H01S3/0813 , H01S3/0817 , H01S3/10046 , H01S3/115
摘要： A thin film polarizer (TFP) and a half-wave CdTe electro-optical crystal are utilized to achieve a higher damage threshold in Q-switching CO 2 lasers for material processing applications. Half-wave CdTe electro-optical modulators can be used without the arcing and corona problems typically associated with the higher drive voltage by placing low dielectric constant insulators (such as BeO) around the CdTe crystal. Doubling the voltage placed across a CdTe crystal enables the crystal to function as a half-wave phase retarder EO switch with the same dimensions as a crystal functioning as a quarter-wave EO modulator. These half-wave EO switches can be used with TFPs to shape the output pulses, as well as to direct alternate pulses of repetitively pulsed super pulsed slab lasers to alternate scanners, thereby doubling the output of laser hole drilling systems.
摘要翻译：利用薄膜偏振器（TFP）和半波长CdTe电光晶体来实现用于材料加工应用的Q开关CO 2/2激光器的更高的损伤阈值。通过在CdTe晶体周围放置低介电常数绝缘体（如BeO），可以使用半波长的CdTe电光调制器，而不会产生通常与较高驱动电压相关的电弧和电晕问题。将跨越CdTe晶体的电压加倍使晶体能够作为与作为四分之一波长EO调制器的晶体相同尺寸的半波相位延迟器EO开关。这些半波EO开关可以与TFP一起使用，以形成输出脉冲，以及将重复脉冲的超脉冲平板激光器的交替脉冲引导到交替的扫描仪，从而使激光钻孔系统的输出加倍。

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