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1.发明申请公开(公告)号：US20220229248A1
公开(公告)日：2022-07-21
申请号：US17714155
申请日：2022-04-06
申请人： TRUMPF Laser GmbH
摘要： A device for transporting pulsed laser radiation includes a pulse duration setting device configured for setting a transport pulse duration of the pulsed laser radiation. the device further includes a hollow core optical fiber having a hollow core surrounded by a material. The hollow core optical fiber is configured to be operated with beam path parameter values that are present at the first fiber end and lie in a target tolerance range. The device further includes a fiber input coupling device configured to couple the pulsed laser radiation into the hollow core optical fiber with the beam path parameter values that lie in the target tolerance range. the transport pulse duration is set so that input coupling of the pulsed laser radiation into the hollow core is provided for all of the beam path parameter values in the target tolerance range.
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2.发明授权公开(公告)号：US12105331B2
公开(公告)日：2024-10-01
申请号：US17714155
申请日：2022-04-06
申请人： TRUMPF Laser GmbH
CPC分类号： G02B6/4206 , G02B6/032 , H01S3/0057
摘要： A device for transporting pulsed laser radiation includes a pulse duration setting device configured for setting a transport pulse duration of the pulsed laser radiation. the device further includes a hollow core optical fiber having a hollow core surrounded by a material. The hollow core optical fiber is configured to be operated with beam path parameter values that are present at the first fiber end and lie in a target tolerance range. The device further includes a fiber input coupling device configured to couple the pulsed laser radiation into the hollow core optical fiber with the beam path parameter values that lie in the target tolerance range. the transport pulse duration is set so that input coupling of the pulsed laser radiation into the hollow core is provided for all of the beam path parameter values in the target tolerance range.
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公开(公告)号：US20230258529A1
公开(公告)日：2023-08-17
申请号：US18295858
申请日：2023-04-05
申请人： TRUMPF Laser GmbH
CPC分类号： G01M11/31 , B23K26/705 , G02B6/4214 , G02B6/4227
摘要： An optical fiber unit includes an optical fiber. The optical fiber includes a light guiding region configured for guiding light through the optical fiber, an input coupling end having a first fiber end surface for coupling the light into the light guiding region, and an output coupling end having a second fiber end surface for coupling the light out of the light guiding region. The optical fiber unit further includes a first end piece arranged at one of the input coupling end and the output coupling end. The first end piece is configured to couple the light into the light guiding region or couple the light out of the light guiding region. The first end piece includes a reflection element configured to divert a portion of the light propagating along a direction of propagation through the light guiding region away from the direction of propagation.
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4.发明申请公开(公告)号：US20220385019A1
公开(公告)日：2022-12-01
申请号：US17881711
申请日：2022-08-05
申请人： TRUMPF Laser GmbH
摘要： A method for amplifying an ultrashort laser pulse includes: a) stretching the ultrashort laser pulse in time, b) amplifying the time-stretched laser pulse, c) compressing the amplified time-stretched laser pulse, with at least one gain phase contribution selected from a group consisting of a gain dynamics phase contribution of the laser pulse that emerges as a change in a nonlinear phase on account of gain dynamics in step b), a gain bandwidth phase contribution of the laser pulse that emerges as a change in the nonlinear phase on account of a gain bandwidth in step b), and a combination thereof, being compensated by virtue of d) an additional phase contribution being imparted on the laser pulse prior to step c) and/or e) a spectrum of the laser pulse being changed, in such a way that the at least one gain phase contribution is compensated after step c).
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公开(公告)号：US11205883B2
公开(公告)日：2021-12-21
申请号：US16220380
申请日：2018-12-14
申请人： TRUMPF LASER GMBH
IPC分类号： H01S3/00 , H01S3/10 , B23K26/064
摘要： The invention relates to dispersion adjustment units for electromagnetic radiation having a spectral width, e.g., for laser pulses. The dispersion adjustment unit includes at least one dispersive element for producing angular dispersion in an angular dispersion region limited by two interaction regions of the electromagnetic radiation with the at least one dispersive element. In the angular dispersion region, individual spectral components of the electromagnetic radiation are associated with optical paths extending at an angle to one another. Furthermore, the dispersion adjustment unit includes an optical unit that is arranged in the angular dispersion region and includes an optical element that transmits the electromagnetic radiation. The optical element effects an incidence-angle-dependent parallel offset of the individual spectral components of the electromagnetic radiation with respect to the propagation of the individual spectral components before and after the optical unit.
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6.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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7.发明公开公开(公告)号：US20240146010A1
公开(公告)日：2024-05-02
申请号：US18408618
申请日：2024-01-10
申请人： TRUMPF Laser GmbH
IPC分类号： H01S3/00
CPC分类号： H01S3/0057 , H01S3/0014
摘要： A pulse modification apparatus includes at least one pulse stretcher for dispersive stretching of laser pulses and/or at least one pulse compressor for dispersive compression of the laser pulses, an actuator for setting a dispersion of the at least one pulse stretcher or a dispersion of the at least one pulse compressor by setting at least one manipulated variable, a controller for controlling the actuator based on a measurement signal, and an ambient sensor for detecting at least one ambient parameter as the measurement signal. The dispersion of the at least one pulse stretcher or the dispersion of the at least one pulse compressor is dependent on the at least one ambient parameter.
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公开(公告)号：US20230361523A1
公开(公告)日：2023-11-09
申请号：US18337445
申请日：2023-06-20
申请人： TRUMPF Laser GmbH
发明人： Florian Graf , Aleksander Budnicki
CPC分类号： H01S3/06725 , H01S3/0675 , H01S3/06791 , H01S3/08013 , H01S3/094003 , H01S3/094076 , H01S3/1603
摘要： A passive mode-coupled fiber oscillator includes a bidirectional loop, a unidirectional loop, and a 3x3 coupler. The bidirectional loop and the unidirectional loop are coupled to one another via the 3x3 coupler. The bidirectional loop includes a first amplification fiber that is doped using at least one element selected from the group consisting of ytterbium, neodymium, erbium, thulium, and holmium. The fiber oscillator further includes a dispersion compensation element. The fiber oscillator has an anomalous dispersion overall.
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公开(公告)号：US20230170660A1
公开(公告)日：2023-06-01
申请号：US18161904
申请日：2023-01-31
申请人： TRUMPF Laser GmbH
发明人： Jonathan Brons , Raphael Scelle , Dominik Bauer , Aleksander Budnicki , Alexander Killi , Dirk Sutter , Peter Kroetz
CPC分类号： H01S3/0057 , G02F1/3511 , G02F1/3503
摘要： A laser system for nonlinear pulse compression includes a laser source configured to generate laser pulses with a pulse energy of at least 50 mJ, a spectral broadening device for spectrally broadening the high-energy laser pulses using self-phase modulation, and a compression device including a grating compressor having at least two diffraction gratings and configured to compress the spectrally broadened high-energy laser pulses. The laser system is configured to generate a pulse duration of the high-energy laser pulses of less than 100 fs.
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公开(公告)号：US10288815B2
公开(公告)日：2019-05-14
申请号：US15958280
申请日：2018-04-20
申请人： TRUMPF Laser GmbH
发明人： Martin Liermann , Andreas Enzmann , Aleksander Budnicki , Florian Jansen , Johannes Overbuschmann
摘要： Fiber mounting units for supporting an optical fiber for fiber laser systems are disclosed and include a base body having a fiber end attachment section, a fiber guide section, and a connection section arranged between the fiber end attachment section and the fiber guide section. The fiber end attachment section is adapted to attach a receiving element, which holds a fiber end portion of the optical fiber, the fiber guide section is adapted to guide a fiber central portion of the optical fiber, and the connection section is configured as a flexure bearing between the fiber end attachment section and the fiber guide section.
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