High-power single-pass pumped diamond Raman oscillator

Matthias Heinzig, Till Walbaum, Robert J. Williams, Ondrej Kitzler, Richard P. Mildren, Thomas Schreiber, Ramona Eberhardt, Andreas Tünnermann

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We present our recent advances on power scaling of a high-power single-pass pumped CVD-diamond Raman oscillator at 1.2 μm. The single pass scheme reduced feedback to the high gain fiber amplifier, which pumps the oscillator. The Yb-doped multi-stage fiber amplifier itself enables up to 1 kW output power at a narrow linewidth of 0.16 nm. We operate this laser in quasi-cw mode at 10% duty cycle and on-time (pulse) duration of 10 ms. With a maximum conversion efficiency of 39%, a maximum steady-state output power of 380 W and diffraction limited beam quality was achieved.

Original languageEnglish
Title of host publicationFiber Lasers XV
Subtitle of host publicationTechnology and Systems
EditorsIngmar Hartl, Adrian L. Carter
Place of PublicationBellingham, Washington
Number of pages6
ISBN (Electronic)9781510615106
ISBN (Print)9781510615090
Publication statusPublished - 26 Feb 2018
EventFiber Lasers XV: Technology and Systems 2018 - San Francisco, United States
Duration: 29 Jan 20181 Feb 2018

Publication series

NameProceedings of SPIE
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceFiber Lasers XV: Technology and Systems 2018
Country/TerritoryUnited States
CitySan Francisco

Bibliographical note

Copyright 2018 Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.


  • CVD Diamond
  • High-power lasers
  • narrow linewidth source
  • Nonlinear frequency conversion
  • Raman laser


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