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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 16 — Aug. 1, 2011
  • pp: 15162–15172

Thermal effects in kilowatt all-fiber MOPA

Yuanyuan Fan, Bing He, Jun Zhou, Jituo Zheng, Houkang Liu, Yunrong Wei, Jingxing Dong, and Qihong Lou  »View Author Affiliations


Optics Express, Vol. 19, Issue 16, pp. 15162-15172 (2011)
http://dx.doi.org/10.1364/OE.19.015162


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Abstract

Thermal effects and output power characteristics of kilowatt all-fiber master-oscillator power amplifier (MOPA) are investigated. Proper designs for cooling apparatus are proposed and demonstrated experimentally, for the purpose of minimizing splice heating which is critical for the reliability of high power operation. By using these optimized methods, a thermal damage-free, highly efficient ytterbium-doped double-clad fiber MOPA operating at 1080 nm with 1.17 kW output was obtained. The maximum surface temperature at the pump light launching end splice of the booster amplifier was 345 K, and the temperature rise for this key splice was 0.052 K/W.

© 2011 OSA

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3510) Lasers and laser optics : Lasers, fiber
(140.6810) Lasers and laser optics : Thermal effects
(140.3615) Lasers and laser optics : Lasers, ytterbium

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: May 25, 2011
Revised Manuscript: July 3, 2011
Manuscript Accepted: July 4, 2011
Published: July 21, 2011

Citation
Yuanyuan Fan, Bing He, Jun Zhou, Jituo Zheng, Houkang Liu, Yunrong Wei, Jingxing Dong, and Qihong Lou, "Thermal effects in kilowatt all-fiber MOPA," Opt. Express 19, 15162-15172 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-16-15162


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