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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 24 — Nov. 21, 2011
  • pp: 23965–23980

Thermo-optical effects in high-power Ytterbium-doped fiber amplifiers

Kristian Rymann Hansen, Thomas Tanggaard Alkeskjold, Jes Broeng, and Jesper Lægsgaard  »View Author Affiliations


Optics Express, Vol. 19, Issue 24, pp. 23965-23980 (2011)
http://dx.doi.org/10.1364/OE.19.023965


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Abstract

We investigate the effect of temperature gradients in high-power Yb-doped fiber amplifiers by a numerical beam propagation model, which takes thermal effects into account in a self-consistent way. The thermally induced change in the refractive index of the fiber leads to a thermal lensing effect, which decreases the effective mode area. Furthermore, it is demonstrated that the thermal lensing effect may lead to effective multi-mode behavior, even in single-mode designs, which could possibly lead to degradation of the output beam quality.

© 2011 OSA

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(060.4370) Fiber optics and optical communications : Nonlinear optics, fibers
(350.6830) Other areas of optics : Thermal lensing

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: August 5, 2011
Revised Manuscript: September 19, 2011
Manuscript Accepted: October 13, 2011
Published: November 10, 2011

Citation
Kristian Rymann Hansen, Thomas Tanggaard Alkeskjold, Jes Broeng, and Jesper Lægsgaard, "Thermo-optical effects in high-power Ytterbium-doped fiber amplifiers," Opt. Express 19, 23965-23980 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-24-23965


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