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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 46, Iss. 22 — Aug. 1, 2007
  • pp: 5237–5240

Revising the formula of thermal focal length in a side-pumped laser rod by experiments

Xiaobo Wang, Xiaojun Xu, Xiao Li, and Qisheng Lu  »View Author Affiliations


Applied Optics, Vol. 46, Issue 22, pp. 5237-5240 (2007)
http://dx.doi.org/10.1364/AO.46.005237


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Abstract

The correct formula of the thermal focal length in a side-pumped Nd:YAG laser rod is discussed and confirmed by experimental results. It is shown that thermally induced stresses that cause a distortion of flatness occur within the region of the whole rod. The presented calculations are in agreement with the experimental observations. The results reveal that the temperature-dependent variation of the refractive index and the distortion caused by the thermally induced stresses constitute the major contributions to thermal lensing.

© 2007 Optical Society of America

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3530) Lasers and laser optics : Lasers, neodymium
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.6810) Lasers and laser optics : Thermal effects

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: January 8, 2007
Revised Manuscript: March 2, 2007
Manuscript Accepted: March 4, 2007
Published: July 9, 2007

Citation
Xiaobo Wang, Xiaojun Xu, Xiao Li, and Qisheng Lu, "Revising the formula of thermal focal length in a side-pumped laser rod by experiments," Appl. Opt. 46, 5237-5240 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-22-5237


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References

  1. W. Koechner, "Thermo-optic effects and heat removal," in Solid-State Laser Engineering (Springer, 1999), pp. 406-468.
  2. W. Koechner, "Thermal lensing in a Nd:YAG laser rod," Appl. Opt. 9, 2548-2553 (1970). [CrossRef] [PubMed]
  3. W. Koechner, "Properties of solid-state laser materials," in Solid-State Laser Engineering (Springer, 1999), pp. 28-87.
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  7. "Nd-doped Phosphate Glass," http://www.laserglass.com.cn/english-page/index/product/Nd%20doped%20phosphate%20glass.htm.
  8. G. Albrecht, E. V. George, W. F. Krupke, W. Sooy, and S. B. Sutton, "High energy bursts from a solid state laser operated in the heat capacity limited regime," U.S. patent 5,526,372 (11 June 1996).
  9. X. Wang, X. Xu, Q. Lu, and E. Xi, "Shack-Hartmann wavefront sensor measurement for dynamic temperature profiles in heat capacity laser rods," Appl. Opt. 46, 2963-2968 (2007). [CrossRef] [PubMed]

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