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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 35 — Dec. 10, 2009
  • pp: 6701–6707

Semianalytical thermal analysis of the heat capacity of YAG laser rods

Peng Shi, Bing Bai, Linli Zhang, Long Li, and Yu Xin  »View Author Affiliations


Applied Optics, Vol. 48, Issue 35, pp. 6701-6707 (2009)
http://dx.doi.org/10.1364/AO.48.006701


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Abstract

Based on the theory of semianalytical thermal analysis, we investigate the heat capacity of Nd:YAG laser rods for pumping and cooling. A general expression for the temperature field within Nd:YAG laser rod crystals is obtained for the pumping stage and the relation of the maximum temperature rise with pumping time. We also achieve an expression for the temperature field for the cooling stage and the relation of the maximum temperature rise with cooling time. These results show that, when using the output power of 300 W LD pumped Nd:YAG laser rod crystals for 5 s, the maximum temperature rise in the center of the pump face is 154.79 ° C . After we stop the pumping for 30 s, the maximum temperature rise drops to 0.8%. These results are in agreement with those reported by others. Our results provide a theoretical basis for the optimized design of a LD end-pumped heat capacity laser.

© 2009 Optical Society of America

OCIS Codes
(120.6810) Instrumentation, measurement, and metrology : Thermal effects
(140.3320) Lasers and laser optics : Laser cooling
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3580) Lasers and laser optics : Lasers, solid-state
(160.3380) Materials : Laser materials

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: August 31, 2009
Revised Manuscript: November 4, 2009
Manuscript Accepted: November 12, 2009
Published: December 2, 2009

Citation
Peng Shi, Bing Bai, Linli Zhang, Long Li, and Yu Xin, "Semianalytical thermal analysis of the heat capacity of YAG laser rods," Appl. Opt. 48, 6701-6707 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-35-6701

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