Laser diode end-pumped accousto-optical Q-switched Nd:YVO4 laser with high power and high slope efficiency

作者：Yu Jin^*; Zhang Xue; Liu Yang; Fan Zhongwei; Zhao Tianzhuo; Ma Yunfeng; Zhang Jing; Wang Peifeng

来源：High Power Laser and Particle Beams, 2011, 23(2): 285-289.

DOI：10.3788/HPLPB20112302.0285

• Acousto-optical Q-switched
• Double-bonded crystal
• End-pumped
• High slope efficiency
• Laser diode

A high average output power, high slope efficiency acousto-optical Q-switched 1064 nm laser is reported with a laser diode(LD) end-pumped Nd:YVO4 double-bonded crystal scheme. With the proper estimation of thermal lensing effects under intense pumping, the mode matching and thermally stable cavity parameters are discussed and optimized, and a stable high-power high-slope efficiency output is obtained. At the highest repetition rate of 50 kHz and pump power of 46.8 W, a maximum average output power of 17.6 W is achieved with optical conversion efficiency of 37.6%, slope efficiency of 70.1% and pulse width of 51.3 ns. At the lowest repetition rate of 10 kHz, a maximum single pulse energy of 0.91 mJ and peak power of 46.2 kW are measured with pulse width of 19.8 ns.

• 出版日期2011