公开(公告)号：US09235106B2

公开(公告)日：2016-01-12

申请号：US14391840

申请日：2013-04-12

申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG e.V. ,  FRIEDRICH-SCHILLER-UNIVERSITÄT JENA

发明人： César Jáuregui Misas ,  Hans-Jürgen Otto ,  Fabian Stutzki ,  Florian Jansen ,  Tino Eidam ,  Jens Limpert ,  Andreas Tünnermann

IPC分类号： G02F1/365 ,  H01S3/067 ,  H01S3/10 ,  H01S3/13 ,  H01S3/094

CPC分类号： G02F1/365 ,  H01S3/06704 ,  H01S3/06737 ,  H01S3/06754 ,  H01S3/06787 ,  H01S3/094011 ,  H01S3/10015 ,  H01S3/1003 ,  H01S3/1302

摘要： The invention relates to a method and corresponding devices for reducing mode instability in an optical waveguide (1), a light signal becoming unstable in the optical waveguide (1) beyond an output power threshold and energy being transformed from a basic mode into higher order modes. The invention proposes a reduction in temperature variation (2) along the optical waveguide (1) and/or a reduction in changes in the optical waveguide (1) that are caused by spatial temperature variation as a result of mode interference.

摘要翻译： 本发明涉及一种用于减少光波导（1）中的模式不稳定性的方法和相应的装置，光信号在光波导（1）中变得不稳定，超过输出功率阈值，能量从基本模式变换为高阶模式 。 本发明提出沿着光波导（1）的温度变化（2）的降低和/或由于模式干扰而导致的由空间温度变化引起的光波导（1）的变化的减小。

公开(公告)号：US20150063767A1

公开(公告)日：2015-03-05

申请号：US14391840

申请日：2013-04-12

申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG e.V. ,  FRIEDRICH-SCHILLER-UNIVERSITÄT JENA

发明人： César Jáuregui Misas ,  Hans-Jürgen Otto ,  Fabian Stutzki ,  Florian Jansen ,  Tino Eidam ,  Jens Limpert ,  Andreas Tünnermann

IPC分类号： G02F1/365 ,  H01S3/067

CPC分类号： G02F1/365 ,  H01S3/06704 ,  H01S3/06737 ,  H01S3/06754 ,  H01S3/06787 ,  H01S3/094011 ,  H01S3/10015 ,  H01S3/1003 ,  H01S3/1302

摘要： The invention relates to a method and corresponding devices for reducing mode instability in an optical waveguide (1), a light signal becoming unstable in the optical waveguide (1) beyond an output power threshold and energy being transformed from a basic mode into higher order modes. The invention proposes a reduction in temperature variation (2) along the optical waveguide (1) and/or a reduction in changes in the optical waveguide (1) that are caused by spatial temperature variation as a result of mode interference.

摘要翻译： 本发明涉及一种用于减少光波导（1）中的模式不稳定性的方法和相应的装置，光信号在光波导（1）中变得不稳定，超过输出功率阈值，能量从基本模式变换为高阶模式 。 本发明提出沿着光波导（1）的温度变化（2）的降低和/或由于模式干扰而导致的由空间温度变化引起的光波导（1）的变化的减小。

公开(公告)号：US20190018253A1

公开(公告)日：2019-01-17

申请号：US16031777

申请日：2018-07-10

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

发明人： Thomas Schreiber ,  Fabian Stutzki

IPC分类号： G02B27/10 ,  G02B27/30 ,  H01S3/067

摘要： An optical arrangement and a method for producing a combined beam of a plurality of laser light sources are described. In an embodiment, an optical arrangement includes a linear arrangement of a plurality of laser light sources aligned in parallel and having wavelengths different from each other, wherein the laser light sources are disposed in a plurality of groups, a collimation lens for producing a partial beam bundle for each group of laser light sources and a first diffraction grating onto which the partial beam bundles of the groups of laser light sources impinge adjacent to one another, following the collimation lenses, wherein the first diffraction grating is configured to deflect the partial beam bundles onto a second diffraction grating, and wherein the second diffraction grating is configured to deflect the partial beam bundles such that the bundles are combined into an overall beam bundle.