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Volume 29 Issue 2
Sep.  2013
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The four-pass pumped coupling system of the high power diode lasers stack

  • 1.

    Institute of Applied Electronics, CAEP, Mianyang 621900, China

  • Received Date: 2004-02-16
    Accepted Date: 2004-05-12
  • The 1.1mm thin disk is pumped by CW 800W high power diode lasers stack.The fast axis of each diode laser is collimated with an aspheric microlens.Two macroscopic lenses are used to focus the light by transforming the fast axis and the slow axis,and a 10mm×7mm spot is achieved in the surface of the thin disk.The pumping light that is not absorbed by the thin disk passes the thin disk again when reflected by the spherical reflector,and high absorbing efficiency is obtained.Up to 800W can be focused on a 10mm×7mm spot with the beam parameter product of 640mm·mrad and 540mm·mrad in the fast and slow axis.The pumping light tested by the CCD camera is nearly the symmetric beam.Its cou pling efficiency is up to 80.5% in the 10mm×7mm spot with the aspheric microlens and two cylinder lenses.
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  • [1]

    BEACH R J,HONEA E C,SUTTON S B et al.High-average-power diode-pumped Yb: YAG lasers[J].SPIE,2000,3889:246～260.
    [2]

    ABAZADZE A J,KOLBATSKOV J M,PAVLOVITCH V L et al.Investigations of pulsed Nd:YAG laser with diode-laser bars side-pumped rod geometry[J].SPIE,2001,4350:25～31.
    [3] 秦兴武,陈良明,李明中 et al.LD端面泵浦Nd: YLF激光放大器研究[J].强激光与粒子束,2002,14(2):181～184.
    [4] 高清松,王卫民,庞毓.二极管激光器侧泵浦波导耦合系统设计[J].强激光与粒子束,2002,14(2):169～172.
    [5]

    FRIEDHELM D,VEIT B,MATTHIAS S et al.Fiber coupled diode laser systems up to 2kW output power[J].SPIE,2000,3945: 42～49.
    [6]

    PETER A,HANS J,ECKHARD L et al.Focusing of diode lasers for high beam quality in high power applications[J].SPIE,1992,1780:533～538.
    [7]

    STEFAN H,LARS L.Fiber coupled diode lasers and beam-shapedhigh-power stacks[J].SPIE,1999,3267:116～124.
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通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

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The four-pass pumped coupling system of the high power diode lasers stack

  • 1. Institute of Applied Electronics, CAEP, Mianyang 621900, China
  • Received Date: 2004-02-16
  • Accepted Date: 2004-05-12
  • Available Online: 2005-03-25

Abstract: The 1.1mm thin disk is pumped by CW 800W high power diode lasers stack.The fast axis of each diode laser is collimated with an aspheric microlens.Two macroscopic lenses are used to focus the light by transforming the fast axis and the slow axis,and a 10mm×7mm spot is achieved in the surface of the thin disk.The pumping light that is not absorbed by the thin disk passes the thin disk again when reflected by the spherical reflector,and high absorbing efficiency is obtained.Up to 800W can be focused on a 10mm×7mm spot with the beam parameter product of 640mm·mrad and 540mm·mrad in the fast and slow axis.The pumping light tested by the CCD camera is nearly the symmetric beam.Its cou pling efficiency is up to 80.5% in the 10mm×7mm spot with the aspheric microlens and two cylinder lenses.

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