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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 3 — Feb. 4, 2008
  • pp: 2015–2022

Coherent combining technology of master oscillator power amplifier fiber arrays

R. Xiao, J. Hou, M. liu, and Z. F. Jiang  »View Author Affiliations


Optics Express, Vol. 16, Issue 3, pp. 2015-2022 (2008)
http://dx.doi.org/10.1364/OE.16.002015


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Abstract

Coherent beam combination of fiber laser array is an important technology of realize high-power, high-radiance fiber laser system. In this paper, Master Oscillator-Power Amplifier scheme is used to realize phase controlling of three ytterbium fiber amplifiers, the experiment results of both two and three fiber amplifiers are given and compared. Far-field patterns with different fill factor are studied experimentally. We perform optical phase-noise measurements of a commercial 1-W ytterbium fiber amplifier using our phase control electronics, the dominant phase noises of the 1-W fiber amplifier are at frequencies below one kilohertz.

© 2008 Optical Society of America

OCIS Codes
(030.1670) Coherence and statistical optics : Coherent optical effects
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(270.2500) Quantum optics : Fluctuations, relaxations, and noise

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: November 28, 2007
Revised Manuscript: January 15, 2008
Manuscript Accepted: January 17, 2008
Published: January 29, 2008

Citation
R. Xiao, J. Hou, M. Liu, and Z. F. Jiang, "Coherent combining technology of master oscillator power amplifier fiber arrays," Opt. Express 16, 2015-2022 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-3-2015


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References

  1. S. J. Agust, T. Y. Fan, and A. Sanchez, "Coherent beam combining and phase noise measurements of ytterbium fiber amplifiers," Opt. Lett. 29, 474-476 (2004). [CrossRef]
  2. J. Morel, "Coherent coupling of an array of Nd3+ doped single-mode fiber lasers using an intracavity phase grating," Proc. SPIE 1789, 13-17 (1992). [CrossRef]
  3. T. Y. Fan, "Laser beam combining for power and brightness scaling," IEEE Aerospace Conf. Proc. 3, 49-54 (2000).
  4. J. Hou, R. Xiao, Z. F. Jiang, X. A. Cheng, B. H. Shu, J. B. Chen, and Z. J. Liu, "Coherent beam combination of two polarization maintaining ytterbium fibre amplifiers," Chin. Phys. Lett. 22, 2273-2275 (2005). [CrossRef]
  5. R. Xiao, J. Hou, and Z. F. Jiang, "Experimental investigation of phase detection and compensation in coherent combining of fiber laser array," Acta Phys. Sin. 55, 184-187 (2006).
  6. M. K. Davis, M. J. F. Digonnet, and R. H. Pantell, "Thermal Effects in Doped Fibers," J. of Lightwave Technol. 16, 1013-1023 (1998). [CrossRef]

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