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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)

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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

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

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)

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