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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 17 — Aug. 25, 2014
  • pp: 19947–19952

High-power all-fiber wavelength-tunable thulium doped fiber laser at 2 μm

Ke Yin, Bin Zhang, Guanghui Xue, Lei Li, and Jing Hou  »View Author Affiliations

Optics Express, Vol. 22, Issue 17, pp. 19947-19952 (2014)

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Power scaling of an all-fiber wavelength-tunable thulium doped fiber laser (TDFL) based on a monolithic master oscillator power amplifier (MOPA) system is presented. The whole configuration is comprised of a low-power seed oscillator and two stages of double-cladding thulium doped fiber amplifiers (TDFAs). The tuning of the operating wavelength is realized by inserting a spectral tunable filter into the seed oscillator. Maximum average output power of 115 W is obtained at 1950 nm with a linearly fitted slope efficiency of 51.7%. This laser has superior spectral characteristics with wavelength tunable from 1940 nm to 2070 nm. To the best of our knowledge, this is the first demonstration of an all-fiber wavelength-tunable TDFL at 2 μm with output power exceeding 100 W. The results are of great interest for many application areas.

© 2014 Optical Society of America

OCIS Codes
(140.3280) Lasers and laser optics : Laser amplifiers
(140.3600) Lasers and laser optics : Lasers, tunable

ToC Category:
Lasers and Laser Optics

Original Manuscript: June 17, 2014
Revised Manuscript: July 18, 2014
Manuscript Accepted: July 28, 2014
Published: August 11, 2014

Ke Yin, Bin Zhang, Guanghui Xue, Lei Li, and Jing Hou, "High-power all-fiber wavelength-tunable thulium doped fiber laser at 2 μm," Opt. Express 22, 19947-19952 (2014)

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