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公开(公告)号：US11146036B2
公开(公告)日：2021-10-12
申请号：US16245618
申请日：2019-01-11
申请人： TRUMPF LASER GMBH
摘要： A laser clock signal generator for controlling a laser beam generator to generate pulse laser radiation is provided. The laser clock signal generator includes a clock signal specification input arranged to receive an external clock specification signal, a basic clock signal generator configured to generate a basic clock signal based on the external clock specification signal and output the basic lock signal at a clock signal output to the laser beam generator, and a controller configured to control the basic clock generator, for example, to be synchronized with the external clock specification signal. The laser clock signal generator also includes an overclocking protector arranged between the basic clock generator and the clock signal output.
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42.发明申请公开(公告)号：US20210305768A1
公开(公告)日：2021-09-30
申请号：US17344076
申请日：2021-06-10
申请人： TRUMPF LASER GMBH
发明人： Aleksander Budnicki
摘要： Laser systems are described that each include at least one excitation laser, a high frequency laser pulse source, and a beam switchover device. The beam switchover device is configured to be switched, in order a) in a high-frequency functional position to guide at least one GHz laser pulse train with a pulse repetition rate of individual pulses in the GHz laser pulse train of at least 0.5 GHz from the high frequency laser pulse source to a target position, and b) in a low-frequency functional position to guide at least one low-frequency laser pulse train with a pulse repetition rate of individual pulses in the low-frequency laser pulse train of less than 0.5 GHz from the at least one excitation laser to the target position.
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43.发明申请公开(公告)号：US20210276128A1
公开(公告)日：2021-09-09
申请号：US17331093
申请日：2021-05-26
申请人： TRUMPF LASER GMBH
发明人： Dominik Bauer , Helge Höck , Michael Scharun , Manuel Schindler
IPC分类号： B23K26/26 , B23K26/0622 , B23K26/08
摘要： The present disclosure provides methods, devices, and systems for the butt welding of two, e.g., planar, workpieces composed of glass, e.g., quartz glass, by a pulsed laser beam, e.g., an ultrashort pulse (“USP”) laser beam, which is directed into the workpiece material parallel to the joining surface of the two workpieces and which is focused into the workpiece material in the region of the joining surface to locally melt the two workpieces in the region of their joining surface, wherein the laser focus of the laser beam focused into the workpiece material is moved in or counter to the beam direction of the laser beam to produce in the region of the joining surface a weld seam extending along the beam direction.
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公开(公告)号：US20210165234A1
公开(公告)日：2021-06-03
申请号：US17149769
申请日：2021-01-15
申请人： TRUMPF Laser GmbH
发明人： Christoph Tillkorn , Daniel Flamm , Julian Hellstern , Andreas Heimes , Li-Wen Chang , Maike Prossotowicz
摘要： An optical assembly includes a beam path, passing, in succession, through multiple microlens arrays and a Fourier lens assembly. The microlens arrays have a uniform aperture of their microlenses, and the entirety of the microlens arrays has an effective focal length. The optical assembly further includes an adjustment mechanism, configured to adjust a mutual optical distance of at least some of the microlens arrays in the beam path, thereby setting the effective focal length of the entirety of the microlens arrays. The adjustment mechanism has multiple adjustment positions i=1, . . . , M wherein M is a natural number ≥2, i is an adjustment position index, at which the term a 2 λ · f ML , i in each case essentially smoothly results in a natural number Ni. λ is a center wavelength, fML,i is an effective focal length fML of the entirety of the microlens arrays set by the adjustment position i.
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公开(公告)号：US20210165135A1
公开(公告)日：2021-06-03
申请号：US17149763
申请日：2021-01-15
申请人： TRUMPF Laser GmbH
发明人： Christoph Tillkorn , Daniel Flamm , Florian Jansen , Torsten Beck , Hans-Juergen Otto , Julian Hellstern , Andreas Heimes , Maike Prossotowicz
摘要： An apparatus for combining a plurality of coherent laser beams includes at least N−1 phase setting devices configured to set a respective phase (δφn) of a respective one of the plurality of coherent laser beams, and a beam combination device configured to combine the plurality of coherent laser beams to form at least one combined laser beam. The beam combination device includes a microlens arrangement having at least two microlens arrays configured to form the at least one combined laser beam.
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公开(公告)号：US20210141200A1
公开(公告)日：2021-05-13
申请号：US17149754
申请日：2021-01-15
申请人： TRUMPF Laser GmbH
发明人： Martin Huonker
IPC分类号： G02B19/00 , B23K26/073 , B23K37/053 , B23K26/06 , B23K26/282
摘要： A ring focus optics for machining rotationally symmetrical or nearly rotationally symmetrical workpieces by an annular laser beam includes a conical mirror configured to deflect the annular laser beam radially inward or outward onto a circumference of at least one workpiece, a rotational axis of which is aligned collinear to an optical axis of the ring focus optics. The ring focus optics further includes a holding/centering device surrounded by the annular laser beam and fastened on the housing of the ring focus optics. The holding/centering device is configured to axially fix the at least one workpiece and/or to radially center the at least one workpiece with respect to the optical axis.
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公开(公告)号：US10245696B2
公开(公告)日：2019-04-02
申请号：US14660294
申请日：2015-03-17
申请人： TRUMPF LASER GMBH
摘要： A workpiece processing machine includes a separation device for dividing an operating space into a processing region and at least one additional operating region, a laser processing head configured to process the workpiece, and a rotary workpiece changer having a rotatable workpiece support for transporting the workpiece between the processing region and the at least one additional operating region by an opening. The rotatable workpiece support has a protection wall configured to shield the at least one additional operating region with respect to the processing region. The separation device has a protection element movable between a processing position and a transport position and configured to be in abutment with the protection wall in the processing position to close the opening and spaced apart from the protection wall in the transport position. A spacing between the processing position and the transport position is adjustable based on a dimension of the workpiece.
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公开(公告)号：US09711950B2
公开(公告)日：2017-07-18
申请号：US14711579
申请日：2015-05-13
发明人： Hagen Zimer , Alexander Killi , Steffen Ried , Simon Nagel , Markus Ginter
CPC分类号： H01S5/4012 , H01S3/08054 , H01S3/10061 , H01S5/141 , H01S5/4062 , H01S5/4087
摘要： An external cavity laser apparatus according to an embodiment of the invention is provided. The external cavity laser apparatus includes a plurality of beam emitters that collectively emit a plurality of emitted beams that each includes a primary component emitted beam. A first reflective element is configured to reflect the plurality of primary component emitted beams and a first polarizing optic disposed in the optical path of the plurality of primary component emitted beams is configured to rotate a polarization of each primary component emitted beam to produce a first rotated primary component beam having a first linear polarization and a second rotated primary component beam having a second linear polarization. A polarized beam splitter is configured to direct first feedback system output component beams into an output beam, and to direct second feedback system output component beams to the plurality of beam emitters as feedback beams.
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公开(公告)号：US09331451B2
公开(公告)日：2016-05-03
申请号：US14501401
申请日：2014-09-30
申请人： TRUMPF LASER GMBH
发明人： Dirk Sutter , Alexander Killi , Jochen Kleinbauer , Yufeng Li
IPC分类号： H01S3/091 , H01S3/0941 , H01S5/065 , H01S5/14 , H01S3/094 , H01S3/1055 , H01S3/106 , H01S3/16 , H01S3/06
CPC分类号： H01S3/091 , H01S3/0604 , H01S3/094015 , H01S3/094084 , H01S3/09415 , H01S3/1055 , H01S3/1062 , H01S3/1618 , H01S3/1643 , H01S5/0654 , H01S5/0656 , H01S5/142 , H01S5/146
摘要： The disclosure relates to a pump radiation arrangement comprising: a pump radiation source for producing pump radiation, a means for stabilizing the wavelength of the pump radiation source and a laser-active medium through which the pump radiation passes in a bidirectional manner. The pump radiation arrangement also has a retro-reflector for reflecting pump radiation which is not absorbed by the laser-active medium back to the pump radiation source and a wavelength-selective element for preventing a wavelength destabilization of the pump radiation source by filtering out undesirable spectral portions of pump radiation which is not absorbed by the laser-active medium. The invention also relates to an associated method for pumping a laser-active medium.
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50.发明授权Wavelength selective external resonator and beam combining system for dense wavelength beam combining laser 有权用于密集波长光束组合激光器的波长选择性外部谐振器和光束组合系统公开(公告)号：US09306369B2
公开(公告)日：2016-04-05
申请号：US14087985
申请日：2013-11-22
发明人： Rudolf Huber , Hagen Zimer , Alexander Killi , Christoph Tillkorn , Steffen Ried
CPC分类号： H01S3/13 , G02B27/1006 , H01S5/141 , H01S5/4012 , H01S5/4062 , H01S5/4087
摘要： Wavelength-selective external resonators can be used to greatly increase the output brightness of dense wavelength beam combining (DWBC) system beams by stabilizing the wavelengths of the beams emitted by the individual emitters of the DWBC laser source. The present invention pertains to external resonant cavities that utilize thin-film filtering elements as wavelength-selective elements in external resonators. The present invention further pertains to particular embodiments that utilize thin-film filtering elements in DWBC systems as both output beam coupling elements and wavelength selective elements. The present invention provides advantages over the prior art that include decreased cost, increased fidelity of wavelength selection, and increased wall plug efficiency.
摘要翻译： 波长选择性外部谐振器可用于通过稳定由DWBC激光源的各个发射器发射的波束的波长来大大增加密集波长束组合（DWBC）系统光束的输出亮度。 本发明涉及利用薄膜滤波元件作为外部谐振器中的波长选择元件的外部谐振腔。 本发明还涉及在DWBC系统中利用薄膜滤波元件作为输出光束耦合元件和波长选择元件的特定实施例。 本发明提供了优于现有技术的优点，包括降低成本，提高波长选择的保真度以及增加的壁插拔效率。
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