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Applied Optics

Applied 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)

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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

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

W. Koechner, "Thermal Lensing in a Nd:YAG Laser Rod," Appl. Opt. 9, 2548-2553 (1970)

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  1. L. M. Osterink, J. D. Foster, Appl. Phys. Lett. 12, 128 (1968). [CrossRef]
  2. H. S. Carslow, Conduction of Heat in Solids (Clarendon Press, Oxford, England, 1952), p. 204.
  3. M. Born, E. Wolf, Principles of Optics (Pergamon Press, London, 1965).
  4. J. F. Nye, Physical Properties of Crystals (Oxford University Press, London, 1964).
  5. H. Kogelnik, Bell. Syst. Tech. J. 44, 455 (1965).
  6. E. Snitzer, C. G. Young, in Lasers, A. K. Levine, Ed. (M. Dekker, New York, 1968), Vol. 2.
  7. D. A. La Marre, “High Performance Laser Research,” Report AD840913American Optical Corp., June1968.
  8. R. W. Dixon, J. Appl. Phys. 38, 5149, 1967. [CrossRef]
  9. “YAG:Nd Data,” Union Carbide Corporation, Electronics Div., Crystal Products Dept.
  10. J. D. Foster, L. M. Osterink, Appl. Opt. 7, 2428 (1968). [CrossRef] [PubMed]
  11. W. Koechner, Appl. Opt. 9, 1427 (1970).
  12. H. Kogelnik, Proc. IEEE 54, 1312 (1966). [CrossRef]
  13. W. Koechner, D. K. Rice, IEEE J. Quantum Electron. QE-6, 557 (1970). [CrossRef]
  14. S. Timoshenko, J. N. Goodier, Theory of Elasticity (McGraw-Hill, New York, 1951).
  15. A. G. Fox, T. Li, Bell Syst. Tech. J. 40, 453 (1961).

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