LASERS : Spectral and power characteristics of a 5% Tm : KLu(WO4)2 Nm-cut minislab laser passively Q-switched by a Cr2+ : ZnSe crystal. (28th November 2017)

• Record Type: Journal Article
• Authors: Vatnik, S M; Vedin, I A; Kurbatov, P F; Smolina, E A; Pavlyuk, A A; Korostelin, Yu V; Skasyrsky, Ya K
• Is Part Of: Quantum electronics. Volume 47:Number 11(2017)
• Page Start: 981
• Page End: 985
• Publication Date: 2017-11-28
• Subjects: Quantum electronics -- Periodicals; 537.5
• DOI: 10.1070/QEL16494
• Languages: English
• ISSNs: 1063-7818

Abstract

Abstract: Laser characteristics of a 5%Tm : KLu(WO4 )2 Nm -cut minislab laser passively Q-switched by a Cr 2+ : ZnSe saturable absorber are presented. At a pump power of 21 W, the average laser power at a wavelength of 1.91 μm was 3.2 W (pulse duration 35 ns, pulse energy 0.3 mJ). The maximum slope efficiency of the laser in the Q-switched regime was 31%; the loss in power with respect to the cw regime did not exceed 17%. At pump powers above 15 W, the dependence of the output power in the Q-switched regime on the pump power considerably differed from linear, which was explained by the formation of a thermal lens in the saturable absorber volume. The experimental energies and durations of laser pulses well agree with the values calculated from rate equations.