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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 9, Iss. 11 — Nov. 1, 1970
  • pp: 2548–2553

Thermal Lensing in a Nd:YAG Laser Rod

W. Koechner  »View Author Affiliations


Applied Optics, Vol. 9, Issue 11, pp. 2548-2553 (1970)
http://dx.doi.org/10.1364/AO.9.002548


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Abstract

Theoretical and experimental results are reported on the thermal lensing effect caused by the radial thermal gradient present in optically pumped Nd: YAG laser rods. The presented theory is in agreement with the experimental observations. The results reveal that a Nd:YAG rod under pumped light becomes a positive lens with two focal lengths. The temperature dependent variation of the refractive index constitutes the major contribution of the thermal lensing. The stress dependent variation of the refractive index modifies the focal length about 20%. The effect of end-face curvature caused by an elongation of the rod is less than 6%.

© 1970 Optical Society of America

History
Original Manuscript: March 6, 1970
Published: November 1, 1970

Citation
W. Koechner, "Thermal Lensing in a Nd:YAG Laser Rod," Appl. Opt. 9, 2548-2553 (1970)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-9-11-2548


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References

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