Passively Q-switched Nd:YAG/Cr4+:YAG bonded crystal microchip laser operating at 1112 nm and its application for second-harmonic generation

摘要

A passively Q-switched Nd:YAG/Cr4+:YAG microchip laser operating at 1112 nm is demonstrated. Under a pump power of 5.5 W, a maximum average output power of 623m W was obtained with T = 6% output coupler, corresponding to an optical-to-optical conversion efficiency of 11.3% and a slope efficiency of 19.5%. The minimum pulse width was 2.8 ns, the pulse energy and peak power were 39.3 mu J and 14 kW, respectively. Additionally, based on the 1112 nm laser, a 230 mW 556 nm green-yellow laser was achieved within an LBO crystal. (c) 2015 Optical Society of America