Chinese Journal of Lasers, Volume. 36, Issue s1, 30(2009)
Picosecond Laser System Combined with Nd∶YVO4 and Nd∶YAG Amplifiers
A high average power and high beam quality picosecond laser system combined with diode-end-pumped Nd∶YVO4 and laser diode-side-pumped Nd∶YAG amplifier is described. The system combines the advantages of Nd∶YVO4 crystal having large stimulated-emission cross section and Nd∶YAG crystal having good thermal conductivity. The diode-end-pumped Nd∶YVO4 amplifier allows the laser from the oscillator to obtain high gain so that the laser can amplify rapidly and the diode-side-pumped Nd∶YAG amplifier benefits to obtain high output power. The Nd∶YAG amplifier is designed as double-pass form to increase the efficiency of the amplifier. Spatial filters are adopted between amplifiers to ensure good beam quality and mode matching. Picosecond laser with average power of 43.4 W and good beam quality factor M2<1.7 is generated from this laser system.
Get Citation
Copy Citation Text
Peng Runwu, Guo Lin, Zhang Xiaofu, Li Fangqin, Cui Qianjin, Bo Yong, Peng Qinjun, Cui Dafu, Xu Zuyan, Tang Lijun. Picosecond Laser System Combined with Nd∶YVO4 and Nd∶YAG Amplifiers[J]. Chinese Journal of Lasers, 2009, 36(s1): 30