Abstract:
In order to achieve laser output with high repetition rate, short pulse duration and high beam quality, a LD pumped acousto-optically
Q-switched Nd:YVO
4 solid-state laser was designed and set up. In the lasing experiments, the seed laser with an excellent beam quality was obtained from the master oscillator. The parameters of the seed laser are 25kHz repetition, 22.4μJ pulse energy, 2.19ns pulse duration, 24.3% optical-to-optical conversion. efficiency and
M2 < 1.2. The output laser from the power amplifier is with 25kHz repetition, 585μJ pulse energy, 2.26ns pulse duration, 15.6% extraction efficiency and
M2 < 1.7. The result shows that laser output with high repetition rate, short pulse duration and high beam quality could be achieved by LD pumped acousto-optically
Q-switched Nd:YVO
4 lasers and the experimental results are almost in accordance with the theoretical calculation results.