This article presents the fundamental principles of operational performance of a continuous wave (cw) thin-disk laser with multiple disks in one resonator. Based on the model of an end-pumped Yb:YAG thin-disk laser with nonuniform temperature distribution, the effect of the multiple disks in one resonator is considered. The analytic expressions are derived to analyze the laser output intensity, laser intensity in the resonator, threshold intensity, and the optical efficiency of a thin-disk laser with multiple disks arranged in series. The dependence of output coupler reflectivity and the number of thin disks on various parameters are investigated, which are useful to determine the optimal output coupler reflectivity of the thin-disk lasers and control the laser intensity in the resonator.
© 2012 Optical Society of America
Lasers and Laser Optics
Original Manuscript: May 30, 2012
Revised Manuscript: July 8, 2012
Manuscript Accepted: August 8, 2012
Published: September 10, 2012
Guangzhi Zhu, Xiao Zhu, Changhong Zhu, and Jianli Shang, "Optical model and optimal output coupler for a continuous wave Yb:YAG thin-disk laser with multiple-disk configuration," Appl. Opt. 51, 6411-6420 (2012)