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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 24 — Nov. 24, 2008
  • pp: 19865–19871

Thermal characteristics of an end-pumped high-power ytterbium-sensitized erbium-doped fiber laser under natural convection

Y. Jeong, S. Baek, P. Dupriez, J.-N. Maran, J. K. Sahu, J. Nilsson, and B. Lee  »View Author Affiliations

Optics Express, Vol. 16, Issue 24, pp. 19865-19871 (2008)

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We investigate the thermal characteristics of a polymer-clad fiber laser under natural convection when it is strongly pumped up to the damage point of the fiber. For this, we utilize a temperature sensing technique based on a fiber Bragg grating sensor array. We have measured the longitudinal temperature distribution of a 2.4-m length ytterbium-sensitized erbium-doped fiber laser that was end-pumped at ~975 nm. The measured temperature distribution decreases exponentially, approximately, decaying away from the pump-launch end. We attribute this to the heat dissipation of absorbed pump power. The maximum temperature difference between the fiber ends was approximately 190 K at the maximum pump power of 60.8 W. From this, we estimate that the core temperature reached ~236 °C.

© 2008 Optical Society of America

OCIS Codes
(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

ToC Category:
Lasers and Laser Optics

Original Manuscript: September 29, 2008
Revised Manuscript: November 7, 2008
Manuscript Accepted: November 9, 2008
Published: November 17, 2008

Y. Jeong, S. Baek, P. Dupriez, J.-N. Maran, J. K. Sahu, J. Nilsson, and B. Lee, "Thermal characteristics of an end-pumped high-power ytterbium-sensitized erbium-doped fiber laser under natural convection," Opt. Express 16, 19865-19871 (2008)

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