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公开(公告)号：US20160320687A1
公开(公告)日：2016-11-03
申请号：US15032525
申请日：2014-10-28
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWAND TEN FORSCHUNG E.V. , FRIEDRICH-SCHILLER-UNIVERSITÄT JENA
CPC分类号： G02F1/39 , G02F1/3536 , G02F1/395 , G02F2201/02 , G02F2203/15
摘要： The invention relates to an apparatus (1) for producing short synchronous radiation pulses at different wavelengths, particularly to an optically parametric oscillator, comprising at least one pump radiation source (2), preferably a pump laser, for outputting radiation at a pump wavelength, and a resonator (3) having a wavelength-dependent effective resonator length, wherein the resonator (3) has a non-linear wavelength converter (4) for producing radiation at a first and a second wavelength; a dispersive element (5) having a strong wavelength-dependent delay characteristic; and a coupling-out element (6) for at least partially coupling-out the radiation from the resonator (3). In addition, the invention relates to a method for producing short radiation pulses by means of an apparatus (1), particularly an optically parametric oscillator.
摘要翻译： 本发明涉及一种用于产生不同波长的短同步辐射脉冲的装置（1），特别是涉及一种光学参量振荡器，包括用于输出泵浦波长的辐射的至少一个泵浦辐射源（2），优选为泵浦激光器， 以及具有波长相关的有效谐振器长度的谐振器（3），其中所述谐振器（3）具有用于产生第一和第二波长的辐射的非线性波长转换器（4） 具有强烈的波长相关延迟特性的色散元件（5）; 以及用于至少部分地耦合来自谐振器（3）的辐射的耦合输出元件（6）。 此外，本发明涉及一种借助于装置（1）产生短辐射脉冲的方法，特别是光学参数振荡器。
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公开(公告)号：US11211762B2
公开(公告)日：2021-12-28
申请号：US16630545
申请日：2018-07-12
申请人： Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung E.V. , Friedrich-Schiller-Universität Jena , Leibniz-Institut Für Photonische Technologien E.V.
摘要： The invention relates to an apparatus for generating laser pulses. It is an object of the invention to provide a method for generating synchronized laser pulse trains at variable wavelengths (e.g., for coherent Raman spectroscopy/microscopy), wherein the switching time for switching between different wavelengths should be in the sub-μs range. For this purpose the apparatus according to the invention comprises a pump laser (1), which emits pulsed laser radiation at a specified wavelength, an FDML laser (3), which emits continuous wave laser radiation at a cyclically variable wavelength, and a nonlinear conversion medium (4), in which the pulsed laser radiation of the pump laser (1) and the continuous wave laser radiation of the FDML laser (3) are superposed. In the nonlinear conversion medium (4) the pulsed laser radiation of the pump laser (1) and the continuous wave laser radiation of the FDML laser (3) are converted in an optical parametric process into pulsed laser radiation at a signal wavelength and an idler wavelength that differs therefrom. Furthermore the invention relates to a method for generating laser pulses.
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公开(公告)号：US11579512B2
公开(公告)日：2023-02-14
申请号：US16074240
申请日：2017-02-01
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-SCHILLER-UNIVERSITÄT JENA
IPC分类号： G02F1/39 , H01S3/067 , H01S3/00 , H01S3/1118 , H01S3/13
摘要： A device for generating laser pulses is provided, the device having an optical parametric oscillator converts the laser pulses of a pump laser to laser pulses at a signal wavelength and at an idler wavelength. The optical parametric oscillator has an optical resonator with a non-linear wavelength converter. It is an object of the invention to provide a device that makes efficient generation of synchronous laser pulse trains with two different central wavelengths possible. To this end, the invention proposes that the pump laser is tunable with respect to the pump wavelength and the repetition frequency, wherein the resonator has an optical fibre with a dispersion in the range of 10-100 ps/nm and a length of 10-1000 m. The invention furthermore relates to a method for generating laser pulses using such a device.
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