High-efficiency generation of 355 nm radiation by a diode-end-pumped passively Q-switched Nd:YAG/Nd:YVO4 laser

作者：Li, Bin^*; Sun, Bing; Mu, Huaiyu

来源：Applied Optics, 2016, 55(10): 2474-2477.

DOI：10.1364/AO.55.002474

• HIGH-PEAK POWER
• OUTPUT

In this paper we have demonstrated an efficient generation of 355 nm radiation by a diode-end-pumped Nd:YAG/Nd:YVO4 passively Q-switched 1064 nm laser. Cr:YAG is used as a saturable absorber for pulse generation. Compared to Nd:YAG/Cr:YAG, a passively Q-switched 1064 nm laser with higher polarization ratio is obtained in an Nd:YAG/Nd:YVO4/Cr:YAG configuration, which is helpful to nonlinear frequency conversion. The maximum output power of 8.56 W at 1064 nm is obtained with the pulse repetition rate of 38.6 kHz. Under incident pump power of 25.8 W the polarization ratio of 1064 nm is more than 15:1. Type I and type II critical phase-matching lithium triborate are used as nonlinear frequency conversion crystals. A tripling harmonic-generation output power of 2.22 W at 355 nm is achieved.

• 出版日期2016-4-1
• 单位天津理工大学