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Updated: Jun 10, 2026
20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
Published on: July 12, 2017
Simple analytical derivations of thermal lensing in longitudinally Q-CW pumped Yb:YAG
Gilbert L Bourdet1, Claude Gouédard
1Laboratoire pour l'Utilisation des Lasers Intenses (LULI), Unité Mixte no 7605 CNRS, CEA, EcolePolytechnique, Université Pierre et Marie Curie, Route de Saclay, F-91128 Palaiseau Cedex, France. gilbert.bourdet@polytechnique.edu
Abstract:
In this paper, we introduce analytical derivations for the thermal lensing of an end-pumped laser disk. These derivations are done for pump beam shapes from Gaussian to top hat, assuming that the thermal conductivity is either constant with the temperature or not. We give examples in two temperature regions, where the thermal conductivity exhibits T(-1) or T(-2) dependence. Numerical applications are given for a Q-CW pumped Yb:YAG disk laser.
