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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 26 — Dec. 21, 2009
  • pp: 23536–23543

Thermal lens study in diode pumped Ng - and Np -cut Nd:KGd(WO4)2 laser crystals

P.A. Loiko, K.V. Yumashev, N.V. Kuleshov, V.G. Savitski, S. Calvez, D. Burns, and A.A. Pavlyuk  »View Author Affiliations


Optics Express, Vol. 17, Issue 26, pp. 23536-23543 (2009)
http://dx.doi.org/10.1364/OE.17.023536


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Abstract

A comparative study of thermal lensing effect in diode laser pumped Ng - and Np -cut Nd:KGd(WO4)2 (KGW) laser crystals was performed for laser emission polarized along the principle refractive axis, Nm . The thermal lens in the Ng -cut Nd: KGW was found to be weakly astigmatic with a positive refractive power for both the Nm - and Np -directions. For Np -cut Nd:KGW, strong astigmatism was observed and the refractive powers in the Ng - and Nm -directions had opposing signs. The degree of astigmatism was found to be considerably weaker for the Ng -cut Nd:KGW in comparison with the Np -cut one: 0.35 dptr/(W/cm2) and 2.85 dptr/(W/cm2), respectively. The ratio of the thermal lens refractive powers in the planes parallel and perpendicular to the laser emission polarisation were measured as + 1.4 and −0.425 for Ng - and Np -cut Nd:KGW respectively.

© 2009 OSA

OCIS Codes
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3530) Lasers and laser optics : Lasers, neodymium
(140.6810) Lasers and laser optics : Thermal effects

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: October 12, 2009
Revised Manuscript: November 12, 2009
Manuscript Accepted: November 12, 2009
Published: December 8, 2009

Citation
P. A. Loiko, K. V. Yumashev, N. V. Kuleshov, V. G. Savitski, S. Calvez, D. Burns, and A. A. Pavlyuk, "Thermal lens study in diode pumped Ng- and Np-cut Nd:KGd(WO4)2 laser crystals," Opt. Express 17, 23536-23543 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-26-23536


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