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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 20 — Sep. 26, 2011
  • pp: 19600–19606

Beam quality and noise properties of coherently combined ytterbium doped single frequency fiber amplifiers

Henrik Tünnermann, Jan Hendrik Pöld, Jörg Neumann, Dietmar Kracht, Benno Willke, and Peter Weßels  »View Author Affiliations

Optics Express, Vol. 19, Issue 20, pp. 19600-19606 (2011)

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Collinear coherent combination of multiple single frequency fiber amplifiers is a promising approach to realize the high power laser sources required for 3rd generation gravitational wave detectors (GWD), as long as the stringent requirements on the beam quality and noise properties can be met. Here, we report the beam quality and noise properties of two coherently combined 10 W single frequency amplifiers with respect to the requirements of GWD. The combining efficiency was larger than 95% with 97% of the combined beam in the fundamental spatial mode. There was no significant noise increase compared to the fluctuations of the single amplifier.

© 2011 OSA

OCIS Codes
(230.2285) Optical devices : Fiber devices and optical amplifiers
(140.3425) Lasers and laser optics : Laser stabilization

ToC Category:
Lasers and Laser Optics

Original Manuscript: August 2, 2011
Revised Manuscript: September 8, 2011
Manuscript Accepted: September 8, 2011
Published: September 22, 2011

Henrik Tünnermann, Jan Hendrik Pöld, Jörg Neumann, Dietmar Kracht, Benno Willke, and Peter Weßels, "Beam quality and noise properties of coherently combined ytterbium doped single frequency fiber amplifiers," Opt. Express 19, 19600-19606 (2011)

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