Compensation of thermally induced birefringence directed toward compensation of depolarization and bifocusing in laser rods is treated with simple beam transfer matrices. When we apply a 90-deg polarization-rotating element to a resonator, the radial and the tangential eigensolutions of the resonator change significantly. The effect of this alteration on the resonator’s stability is investigated in detail. The outcome is used to design a single- and double-rod resonator resulting in 53 W with an <i>M</i><sup>2</sup> ≈ 1.5 and 182 W of output power with an <i>M</i><sup>2</sup> ≈ 1.2, respectively.
© 2002 Optical Society of America
Martin Ostermeyer, Guido Klemz, Philipp Kubina, and Ralf Menzel, "Quasi-continuous-wave birefringence-compensated single- and double-rod Nd:YAG lasers," Appl. Opt. 41, 7573-7582 (2002)