A high-peak power nanosecond all-fiber MOPA system at high-repetition rate

Chun Lin Chang, Po Yen Lai, Yen Yin Li, Shih Hung Chen, Sheng Lung Huang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

By limiting the core diameter of 15 μm at maximum with NA=0.07±0.01 for the near-diffraction-limited output (V <3.6), we successfully generate the pulse with the peak power of 36 kW and the duration of 4.6 ns in FWHM at the repetition rate of 20 kHz. To the best of our knowledge, the signal pulse energy corresponding to 264 μJ is the highest to date in the diode-seeded 15-μm all-fiber MOPA system with the efficiency of 35%. The success in the energy/power scaling is attributed to the further raise of input energy for more extracted energy, the tradeoff between the Raman-limited signal energy and the amplifier slope efficiency for more signal energy ratio, and the proper adjustment of both pump wavelength and power for avoiding coat damage without forced cooling.

Original languageEnglish
Title of host publicationFiber Lasers X
Subtitle of host publicationTechnology, Systems, and Applications
DOIs
StatePublished - 2013
EventFiber Lasers X: Technology, Systems, and Applications - San Francisco, CA, United States
Duration: 4 Feb 20137 Feb 2013

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8601
ISSN (Print)0277-786X

Conference

ConferenceFiber Lasers X: Technology, Systems, and Applications
Country/TerritoryUnited States
CitySan Francisco, CA
Period4/02/137/02/13

Keywords

  • energy/power scaling
  • fiber laser amplifiers
  • Master oscillator power amplification
  • stimulated Raman scattering
  • ytterbium-doped

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