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11.发明公开STABILISIERUNG DER REPETITIONSRATE EINES PASSIV GÜTEGESCHALTETEN LASERS ÜBER GEKOPPELTE RESONATOREN 审中-公开被动重复率Q开关激光器的稳定化关于耦合的谐振器
公开(公告)号：EP2481134A1
公开(公告)日：2012-08-01
申请号：EP10790828.7
申请日：2010-09-17
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. , Friedrich-Schiller-Universität Jena
IPC分类号： H01S3/082 , H01S3/113 , H01S3/0941
CPC分类号： H01S3/082 , G01S7/4814 , H01S3/08013 , H01S3/08054 , H01S3/09415 , H01S3/10046 , H01S3/113
摘要： The invention relates to a Q-switched laser comprising a pump light source (1), an optical resonator, in which a laser medium (6) is situated and a passive Q-switch (5). The aim of the invention is to provide an improved Q-switched laser which has a simple, compact construction with a repetition rate that has at the same time the smallest possible degree of time jitter. To achieve this, according to the invention, part of the light that is decoupled from the optical resonator is fed to an optical delay line (9) by means of a beam splitter (8) and is re-coupled to the optical resonator once it has passed through said optical delay line (9). The optical resonator has a decoupling mirror (4) and the coupled resonator can contain a dichroic beam splitter (7) and a polarisation beam splitter (8).
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12.发明公开VORRICHTUNG ZUM FÜGEN UND TAPERN VON FASERN ODER VON ANDEREN OPTISCHEN BAUELEMENTEN 有权设备加入和菟丝子纤维或其他光学元件
公开(公告)号：EP2291695A2
公开(公告)日：2011-03-09
申请号：EP09749658.2
申请日：2009-05-19
IPC分类号： G02B6/255
CPC分类号： B23K26/0734 , B23K26/0643 , B23K26/28 , G02B6/2551
摘要： The invention relates to a device for joining and tapering fibres and/or preferably cylindrical optical components, comprising a retaining device for holding the fibres and/or optical components in the processing position, a laser radiation source for emitting a laser beam and beam forming elements for guiding the laser beam to the processing site. At least a first beam forming element is inserted into the beam path of the laser radiation source for producing a radiation having the form of an annulus and a second beam forming element is provided for specifying the angle of incidence of the radiation having the form of an annulus onto the fibre(s) and/or optical components in the processing position.
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公开(公告)号：EP3656024A1
公开(公告)日：2020-05-27
申请号：EP18750342.0
申请日：2018-07-17
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. , Friedrich-Schiller-Universität Jena
IPC分类号： H01S3/067
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公开(公告)号：EP3411754A1
公开(公告)日：2018-12-12
申请号：EP17707175.0
申请日：2017-02-01
申请人： Fraunhofer Gesellschaft zur Förderung der angewandten Forschung e.V. , Friedrich-Schiller-Universität Jena
CPC分类号： G02F1/39 , H01S3/067 , H01S3/1118
摘要： The invention relates to a device (1) for generating laser pulses, comprising a pump laser (1), which emits laser pulses at a pump wavelength (12) with a repetition frequency, wherein the pulse duration of the laser pulses is 0.5-100 ps; comprising an optical parametric oscillator (3), which converts at least some of the laser pulses from the pump laser (1) into laser pulses at a signal wavelength (10) and an idler wavelength (11) different therefrom, wherein the optical parametric oscillator (3) has an optical resonator (20); comprising a non-linear wavelength converter (22), which converts the laser pulses from the pump laser (1) into laser pulses at the signal wavelength (10) and the idler wavelength (11); and comprising a coupling-out element (24), which couples out at least some of the radiation from the optical resonator (20). The problem addressed by the invention is that of providing a device which enables the efficient generation of synchronous laser pulse trains at two different central wavelengths, wherein the available tuning range with regard to the spacing of the central wavelengths is increased with respect to the prior art. For this purpose, the invention proposes that the pump laser (1) is tunable with regard to the pump wavelength (12) and the repetition frequency, and that the resonator (20) has an optical fibre (23) having a dispersion in the range of 10-100 ps/nm and a length of 10-1000 m. The invention also relates to a method for generating laser pulses using such a device.
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15.发明授权EINZELMODENPROPAGATION IN MIKROSTRUKTURIERTEN OPTISCHEN FASERN 有权米曲霉生物碱的EINZELMODENPROPAGATION IN MIKROSKUKURURIERTEN OPTISCHEN FASERN
公开(公告)号：EP2406674B8
公开(公告)日：2017-05-31
申请号：EP10714168.1
申请日：2010-03-12
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. , Friedrich-Schiller-Universität Jena
CPC分类号： G02B6/02347 , G02B6/02009 , G02B6/02333 , G02B6/02352 , G02B6/02361 , G02B6/02366 , G02B6/14 , H01S3/06729
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公开(公告)号：EP3103167A1
公开(公告)日：2016-12-14
申请号：EP15707047.5
申请日：2015-02-03
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. , Friedrich-Schiller-Universität Jena
CPC分类号： H01S3/0078 , G02B27/1006 , G02B27/145 , H01S3/0092 , H01S3/06737 , H01S3/06754 , H01S3/1301 , H01S3/1307 , H01S3/2308 , H01S3/2383
摘要： The invention relates to an optical array comprising a splitting element (1) which splits an input beam (E) into at least two partial beams (T1, T2, T3, T4), at least one optical element (V1, V2, V3, V4, MV) through which at least one of the partial beams (T1, T2, T3, T4) propagates, and at least one combining element (4) which spatially superimposes the partial beams (T1, T2, T3, T4) into an output beam (A). The problem addressed by the invention is to provide an optical array which is improved over the prior art and which enables an effective and simple splitting of the input beam, in particular a laser beam with pulsed or continuous emission. The invention solves the problem in that the splitting element (1) and/or the combining element (4) each have a partially reflective element (2, 2') which reflects the radiation of the input beam (E) or of the output beam (A) two or more times, wherein the partially reflective element (2, 2') has zones (a, b, c, d) of differing reflectivity.
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公开(公告)号：EP2612405A2
公开(公告)日：2013-07-10
申请号：EP11761278.8
申请日：2011-08-29
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. , Friedrich-Schiller-Universität Jena
IPC分类号： H01S3/067
CPC分类号： H01S3/2308 , G02B27/145 , G02B27/283 , H01S3/0057 , H01S3/06754 , H01S3/1307 , H01S3/2316 , H01S3/2383
摘要： The invention relates to an optical amplifier arrangement for amplifying ultra-short pulsed laser radiation comprising a mode-locked laser (1) and two or more optical amplifiers (3) arranged downstream of the laser (1) in the propagation direction of the laser radiation. Optical amplifier arrangements of this type are known in the prior art. Here the intention is to present an alternative to the known amplifier arrangements. The invention proposes arranging between the laser (1) and the optical amplifiers (3) at least one splitting element (2) which splits the pulsed laser radiation between a plurality of amplifier channels (4), wherein each amplifier channel (4) has at least one optical amplifier (3), and wherein at least one common combination element (5) is disposed downstream of the amplifier channels (4) and coherently superimposes the pulsed laser radiation amplified in the amplifier channels (4).
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公开(公告)号：EP2384526B1
公开(公告)日：2013-03-13
申请号：EP09801414.5
申请日：2009-12-23
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. , Friedrich-Schiller-Universität Jena
CPC分类号： H01S3/0057 , H01S3/2308
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公开(公告)号：EP1929594A2
公开(公告)日：2008-06-11
申请号：EP06791761.7
申请日：2006-08-29
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. , Friedrich-Schiller-Universität Jena
IPC分类号： H01S3/067
CPC分类号： H01S3/067 , H01S3/06712 , H01S3/06725 , H01S3/094069 , H01S3/1115 , H01S3/1618
摘要： The invention relates to a linear-resonator fiber laser, especially for generating self-similar pulses, comprising a pump source (6) and a linear resonator. The linear resonator is provided with two reflectors (1), a polarization-maintaining fiber (3) that is doped by means of an intensifying medium and has a normal dispersion ß2 > 0 in the frequency range predefined by the intensifying medium, a dispersion-compensating element (2) having an anomalous dispersion ß2 0. The fiber (3), the dispersion-compensating element (2), the element (8) for extracting radiation, and the non-linear mode-coupling element (1b, 1c) are disposed between the two reflectors (1) in a joint beam path defined by the resonators. The total dispersion of the components located in the beam path is normal.
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公开(公告)号：EP3980823A1
公开(公告)日：2022-04-13
申请号：EP20734649.5
申请日：2020-06-04
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