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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 34 — Dec. 1, 2010
  • pp: 6651–6659

Thermo-optic coefficients and thermal lensing in Nd-doped KGd ( WO 4 ) 2 laser crystals

Pavel A. Loiko, Konstantin V. Yumashev, Nikolai V. Kuleshov, and Anatoly A. Pavlyuk  »View Author Affiliations


Applied Optics, Vol. 49, Issue 34, pp. 6651-6659 (2010)
http://dx.doi.org/10.1364/AO.49.006651


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Abstract

We measured the thermo-optic coefficients d n / d T of anisotropic Nd : KGd ( WO 4 ) 2 crystals at the wavelengths of 1.064 μm and 532 nm ( 300 K ) by a beam deflection method. The values of d n / d T are determined to be d n p / d T = 16.0 × 10 6 K 1 , d n m / d T = 11.8 × 10 6 K 1 , and d n g / d T = 19.5 × 10 6 K 1 (at 1.064 μm ) and d n p / d T = 14.3 × 10 6 K 1 , d n m / d T = 10.0 × 10 6 K 1 , and d n g / d T = 15.0 × 10 6 K 1 (at 532 nm ). Thermal lensing in the flashlamp-pumped N p - and N g -cut Nd : KGd ( WO 4 ) 2 laser rods was studied at 1.064 μm by a probe beam technique in the nonlasing conditions, and the contribution of the photoelastic term to the thermal lens optical power was estimated. Athermal propagation directions with the definitions d n / d T + ( n 1 ) α T = 0 and d n / d T + n α T = 0 were found in Nd : KGd ( WO 4 ) 2 .

© 2010 Optical Society of America

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3380) Lasers and laser optics : Laser materials
(140.6810) Lasers and laser optics : Thermal effects
(160.4760) Materials : Optical properties

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: May 5, 2010
Revised Manuscript: September 13, 2010
Manuscript Accepted: October 22, 2010
Published: November 30, 2010

Citation
Pavel A. Loiko, Konstantin V. Yumashev, Nikolai V. Kuleshov, and Anatoly A. Pavlyuk, "Thermo-optic coefficients and thermal lensing in Nd-doped KGd(WO4)2 laser crystals," Appl. Opt. 49, 6651-6659 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-34-6651

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