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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 20 — Jul. 10, 2013
  • pp: 4854–4857

Single-frequency 332  W, linearly polarized Yb-doped all-fiber amplifier with near diffraction-limited beam quality

Pengfei Ma, Pu Zhou, Yanxing Ma, Rongtao Su, Xiaojun Xu, and Zejin Liu  »View Author Affiliations


Applied Optics, Vol. 52, Issue 20, pp. 4854-4857 (2013)
http://dx.doi.org/10.1364/AO.52.004854


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Abstract

A 332 W all-fiber amplifier chain with single frequency and single polarization (average extinction ratio >21dB) is presented based on master oscillator power amplification configuration. A highly Yb-doped concentration fiber of 2.8 m with a core diameter of 30 μm is utilized as the gain fiber in the final fiber amplifier. The slope efficiency of the main amplifier is measured to be 83.7% and the beam quality (M2 factor) is measured to be 1.4. By measuring the polarization extinction ratio (PER) of the amplifier in a different power, we conclude that the PER degrades little as the output power enhances. The output power of backward light reveals that stimulated Brillouin scattering effect is not induced in the configuration. To the best of our knowledge, this is the highest power of all-fiber single frequency and single polarization amplifier with near-diffraction-limited beam quality.

© 2013 Optical Society of America

OCIS Codes
(140.3280) Lasers and laser optics : Laser amplifiers
(140.3290) Lasers and laser optics : Laser arrays
(140.3580) Lasers and laser optics : Lasers, solid-state

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: March 20, 2013
Revised Manuscript: June 8, 2013
Manuscript Accepted: June 8, 2013
Published: July 5, 2013

Citation
Pengfei Ma, Pu Zhou, Yanxing Ma, Rongtao Su, Xiaojun Xu, and Zejin Liu, "Single-frequency 332  W, linearly polarized Yb-doped all-fiber amplifier with near diffraction-limited beam quality," Appl. Opt. 52, 4854-4857 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-20-4854


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References

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