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公开(公告)号：US20200235542A1
公开(公告)日：2020-07-23
申请号：US16838564
申请日：2020-04-02
Applicant: Coherent, Inc.
Inventor： Eric R. MUELLER , Vernon A. SEGUIN , Christian SHACKLETON
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.
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公开(公告)号：US10663700B2
公开(公告)日：2020-05-26
申请号：US15883542
申请日：2018-01-30
Applicant: Coherent, Inc.
Inventor： Michele Wayne Winz , Lei Meng
IPC: G02B13/08 , G02B27/14 , G02B13/14 , G02B27/18 , G02B23/04 , G02B27/10 , G02B9/16 , G02B27/09 , G01N15/14 , A61B5/00 , G01N15/10
Abstract: An anamorphic three-element objective lens projects a plurality of beams of different wavelengths and different diameters into an elongated focal spot in a working-plane. In one transverse direction of the lens, the beams are tightly focused with equal beam-waist widths in the working-plane, defining a height of the focal spot. In another transverse direction, the different beams are focused progressively beyond the working-plane such that the beams have a common beam-width in the working-plane, thereby defining a width of the focal spot.
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公开(公告)号：US20190235216A1
公开(公告)日：2019-08-01
申请号：US15883542
申请日：2018-01-30
Applicant: Coherent, Inc.
Inventor： Michele Wayne WINZ , Lei MENG
Abstract: An anamorphic three-element objective lens projects a plurality of beams of different wavelengths and different diameters into an elongated focal spot in a working-plane. In one transverse direction of the lens, the beams are tightly focused with equal beam-waist widths in the working-plane, defining a height of the focal spot. In another transverse direction, the different beams are focused progressively beyond the working-plane such that the beams have a common beam-width in the working-plane, thereby defining a width of the focal spot.
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公开(公告)号：US10338354B2
公开(公告)日：2019-07-02
申请号：US15646688
申请日：2017-07-11
Applicant: Coherent, Inc.
Inventor： Lei Meng , Michele Wayne Winz
IPC: G02B13/18 , G02B13/08 , G01N15/14 , G02B9/16 , G02B27/09 , G02B27/10 , G02B27/14 , G02B13/00 , A61B5/00
Abstract: In a flow cytometer, an objective lens for focusing an input laser-radiation beam including at least four different laser-radiation wavelengths in a common plane includes only three singlet lens-elements. Two of the elements are cylindrical elements arranged as a cylindrical telescope for shaping and reducing the size of the input laser-beam. The third element is a spherical element arranged to focus the reduced size beam in the common plane. In one example, all three elements are made from the same optical material.
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公开(公告)号：US20190013638A1
公开(公告)日：2019-01-10
申请号：US16000090
申请日：2018-06-05
Applicant: Coherent, Inc.
Inventor： Qi-Ze SHU , Andrea CAPRARA
Abstract: A fiber-laser includes a gain-fiber in a laser-resonator. A polarizer is located in the laser-resonator at an end thereof, causing the output of the fiber-laser to be linearly polarized. A wavelength-selective element is also included in the laser-resonator for selecting an output wavelength of the fiber-laser from within a gain-bandwidth of the gain-fiber.
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Patent Agency Ranking
公开(公告)号：US20180342848A1
公开(公告)日：2018-11-29
申请号：US15602570
申请日：2017-05-23
Applicant: Coherent, Inc.
Inventor： Matthias ROTH
CPC classification number: H01S3/10061 , H01S3/08059 , H01S3/0816 , H01S3/0941 , H01S3/109 , H01S3/1308
Abstract: An intra-cavity frequency-tripled OPS laser has a laser-resonator including two optically nonlinear crystals arranged for type-I frequency conversion. One of the crystals generates horizontally polarized second-harmonic radiation from vertically plane-polarized fundamental-wavelength radiation circulating in the laser-resonator. A birefringent filter is located between the optically nonlinear crystals. The birefringent filter selects the fundamental-wavelength, establishes the vertical polarization-orientation, and selectively rotates the polarization-orientation of the second-harmonic radiation from horizontal to vertical. The vertically polarized fundamental and second-harmonic radiations are type-I sum-frequency mixed by the other optically nonlinear crystal.
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公开(公告)号：US10056732B2
公开(公告)日：2018-08-21
申请号：US15648317
申请日：2017-07-12
Applicant: Coherent, Inc.
Inventor： Jeffrey Alan Wisdom
CPC classification number: H01S5/02248 , H01S3/08036 , H01S5/02236 , H01S5/024 , H01S5/02438 , H01S5/02469 , H01S5/02476 , H01S5/041 , H01S5/0654 , H01S5/141 , H01S5/183 , H01S2301/163
Abstract: A housing for an optically pumped semiconductor (OPS) laser resonator is terminated at one end thereof by an OPS-chip. The laser resonator is assembled on a platform with the OPS-chip at one end of the platform. The platform is fixedly attached to a baseplate at the OPS-chip end of the platform. The remainder of the platform extends over the baseplate with a gap between the platform and the baseplate. A pump-laser is mounted directly on the baseplate and delivers pump radiation to the OPS-chip.
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公开(公告)号：US09941654B2
公开(公告)日：2018-04-10
申请号：US14842058
申请日：2015-09-01
Applicant: Coherent, Inc.
Inventor： Andrei Starodoumov , Dmitri Simanovski
IPC: H01S3/067 , H01S3/16 , H01S3/23 , H01S3/10 , H01S3/11 , H01S3/094 , H01S3/06 , H01S3/08 , H01S3/081
CPC classification number: H01S3/06716 , H01S3/0604 , H01S3/0621 , H01S3/08095 , H01S3/0817 , H01S3/094038 , H01S3/094042 , H01S3/094084 , H01S3/10061 , H01S3/1106 , H01S3/1618 , H01S3/1631 , H01S3/1643 , H01S3/165 , H01S3/1675 , H01S3/23 , H01S3/2325
Abstract: An apparatus for generating and amplifying laser beams at approximately 1 micrometer wavelength is disclosed. The apparatus includes an ytterbium-doped gain-crystal pumped by an ytterbium fiber-laser. The fiber-laser enables a pump wavelength to be selected that minimizes heating of the gain-crystal. The apparatus can be configured for generating and amplifying ultra-fast pulses, utilizing the gain-bandwidth of ytterbium-doped gain-crystals.
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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
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.
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公开(公告)号：US20170237231A1
公开(公告)日：2017-08-17
申请号：US15377491
申请日：2016-12-13
Applicant: Coherent, Inc.
Inventor： Keith V. GUINN
IPC: H01S5/024 , H01S5/40 , H01L23/473
CPC classification number: H01S5/02423 , F28F3/086 , H01L23/473 , H01S5/4025
Abstract: A cooler for diode-laser bars comprises a machined base including a water-input plenum and a water-output plenum, and a top plate on which the diode-laser bars can be mounted. A stack of three etched plates is provided between the base and first plate. The stack of etched plates is configured to provide a five longitudinally spaced-apart rows of eight laterally spaced-apart cooling-channels connected to the water-input and water-output plenums. Water flows in the cooling-channels and in thermal contact with the first plate.
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