公开(公告)号：US10274806B2

公开(公告)日：2019-04-30

申请号：US15339531

申请日：2016-10-31

Applicant: Coherent, Inc.

Inventor： Gongxue Hua ,  Eric R. Mueller ,  Lanny Laughman

IPC: G02F1/33 ,  B23K26/382 ,  H01S3/00 ,  H01S3/223 ,  H05K3/00 ,  A45D19/00 ,  A45D24/22 ,  B23K26/067 ,  B23K26/064 ,  B23K26/0622 ,  B23K101/42

Abstract: Laser-drilling apparatus includes a gas-discharge for laser emitting laser-radiation pulses, and two acousto-optic modulators (AOMs). The laser radiation pulses are characterized as having two temporal central portions between temporal leading and trailing edge portions. The AOMs are arranged to spatially separate the central temporal portions of the pulses from each other and from the leading and trailing edge portions of the pulses.

公开(公告)号：US09925620B2

公开(公告)日：2018-03-27

申请号：US14830050

申请日：2015-08-19

Applicant: Coherent, Inc.

Inventor： Eric R. Mueller ,  Michael Alexander Bellos

IPC: B23K26/06 ,  B23K26/03 ,  H01S3/223 ,  H01S3/00 ,  B23K26/08 ,  H01S3/08 ,  B23K26/062

CPC classification number: B23K26/0643 ,  B23K26/032 ,  B23K26/06 ,  B23K26/062 ,  B23K26/064 ,  B23K26/0648 ,  B23K26/0665 ,  B23K26/08 ,  H01S3/005 ,  H01S3/0064 ,  H01S3/0071 ,  H01S3/0085 ,  H01S3/08086 ,  H01S3/2232

Abstract: Laser-machining apparatus includes a carbon monoxide (CO) laser emitting a beam of laser-radiation having forty-four different wavelength components and optical elements for delivering the radiation to workpiece. An acousto-optic modulator is provided for modulating the beam on the workpiece. A birefringent plate is provided in the beam transported to the workpiece for randomly polarizing radiation incident on the workpiece. A minimum distance of the workpiece from the laser, and the number of different-wavelength components in the laser beam provides that no optical isolator is required for preventing feedback of radiation into the laser.

公开(公告)号：US09419404B1

公开(公告)日：2016-08-16

申请号：US14693704

申请日：2015-04-22

Applicant: Coherent, Inc.

Inventor： Eric R. Mueller

IPC: H01S3/04 ,  H01S3/041 ,  H01S3/223 ,  H01S3/097 ,  H01S3/03

CPC classification number: H01S3/0407 ,  H01S3/0315 ,  H01S3/041 ,  H01S3/09702 ,  H01S3/2232

Abstract: A carbon dioxide waveguide-laser includes an elongated resonator compartment and an elongated power supply compartment. The resonator and power-supply compartments are separated by a water-cooled heat sink.

Abstract translation: 二氧化碳波导激光器包括细长的谐振器隔室和细长的电源室。 谐振器和供电隔间由水冷散热器隔开。

公开(公告)号：US09414498B2

公开(公告)日：2016-08-09

申请号：US14033246

申请日：2013-09-20

Applicant: Coherent, Inc.

Inventor： Gongxue Hua ,  Eric R. Mueller

IPC: B23K26/00 ,  B23K26/16 ,  H05K3/00 ,  B23K26/38 ,  B23K26/06 ,  B23K26/40

CPC classification number: H05K3/0026 ,  B23K26/0622 ,  B23K26/0643 ,  B23K26/0652 ,  B23K26/382 ,  B23K26/40 ,  B23K26/704 ,  B23K2101/42 ,  B23K2103/50

Abstract: Apparatus for drilling a via-hole in a printed circuit board (PCB) includes a carbon monoxide laser 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. A dispersion-compensator compensates for dispersion in the clipped pulses introduced by the AOM. Achromatic focusing optics focus the dispersion-compensated, clipped pulses on the PCB for the via-hole drilling.

Abstract translation: 用于在印刷电路板（PCB）中钻孔通孔的装置包括一氧化碳激光器提供激光辐射脉冲。 脉冲具有相对较宽的波长范围，并且缓慢的上升和下降沿。 使用声光调制器来限制脉冲的上升沿和下降沿。 色散补偿器补偿由AOM引入的限幅脉冲中的色散。 消色差聚焦光学器件将色散补偿的限幅脉冲聚焦在PCB上用于通孔钻孔。

公开(公告)号：US11336070B2

公开(公告)日：2022-05-17

申请号：US16838564

申请日：2020-04-02

Applicant: Coherent, Inc.

Inventor： Eric R. Mueller ,  Vernon A. Seguin ,  Christian Shackleton

IPC: H01S3/041 ,  H01S3/038 ,  H01S3/03 ,  H01S3/223 ,  H01S3/04

Abstract: A carbon dioxide gas-discharge slab-laser is assembled in a laser-housing. The laser-housing is formed from a hollow extrusion. An interior surface of the extrusion provides a ground electrode of the laser. Another live electrode is located within the extrusion, electrically insulated from and parallel to the ground electrode, forming a discharge-gap of the slab-laser. The electrodes are spaced apart by parallel ceramic strips. Neither the extrusion, nor the live electrode, include fluid coolant channels. The laser-housing is cooled by fluid-cooled plates attached to the outside thereof.

公开(公告)号：US09614342B2

公开(公告)日：2017-04-04

申请号：US14688369

申请日：2015-04-16

Applicant: Coherent, Inc.

Inventor： Eric R. Mueller ,  Adrian Papanide

IPC: H01S3/04 ,  H01S3/223 ,  H01S3/041 ,  H01S3/09

CPC classification number: H01S3/0404 ,  H01S3/041 ,  H01S3/0906 ,  H01S3/2232

Abstract: A carbon dioxide waveguide-laser includes an elongated resonator unit and an elongated power-supply unit. The resonator and power-supply units are spaced by a cooling unit including a plurality of longitudinally extending, spaced-apart fins, with fans arranged to drive air through the spaces between the fins.