In this article, a fiber-solid hybrid amplification picosecond laser system is developed. The maximum single pulse energy of the fiber seed source can exceed 50 nJ and the beam quality factor M2 is less than 1.10. After two-stage traveling-wave amplifiers, the final average power of 23.6 W was obtained, corresponding to the maximum single pulse energy of 118 μJ with a repetition rate of 200 kHz. The research results of this article can provide an effective reference for the implementation of a higher-power Nd: YVO4 laser system.
A frequency-tunable Q-switched laser operation at 1064 nm pumped by a wavelength-locked 878 nm semiconductor diode was reported. Under CW operation mode, the maximum output power of 30.5 W was obtained while the pumping power was 55.9 W, and the light-light conversion efficiency was 54.56 %; While in the Q-switching operation mode, the maximum output power of 24.93 W was obtained when the pumping power was 53.05 W, and the light-light conversion efficiency was 46.54 %. Provides stable operation in Q-switching mode between 60 kHz and 300 kHz repetition frequency with a pulse width range of 22.5 ns to 24 ns. The laser with beam quality M 2x=1.21 and M2y=1.33 was obtained.
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