High repetition rate and short pulse width electro-optic Q-switched Nd:YVO4 laser

Xu Wang, Zhe Sun, Guanghua Cheng

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Using the rubidium oxygen titanium phosphate (RTP) electro-optic deflector as a Q-switch, we realize a continuous wave LD-pumped Q-switched Nd:YVO4 laser and study the output characteristics in experiments at different output coupling rates and different repetition rates. An output pulse train of 1.22 W average output power with pulse width of 1.0 ns and peak power of 224 kW is obtained at the repetition rate of 5 kHz and an output coupler with transmittance of 60%. Another out pulse of 2.67 W average output power with pulse width of 2.2 ns and peak power of 60.7 kW is obtained when the repetition rate is 20 kHz, the slope efficiency is 37%, and the beam quality factors are Mx2=1.226, My2=1.229. Further, by extra-cavity double-frequency based on a potassium titanium oxide phosphate (KTP) crystal, a green laser at 532 nm with repetition rate of 20 kHz and average output power of 1.33 W is obtained, and the corresponding frequency-doubling efficiency is 50%.

Original languageEnglish
Article number0601007
JournalZhongguo Jiguang/Chinese Journal of Lasers
Volume43
Issue number6
DOIs
StatePublished - 10 Jun 2016
Externally publishedYes

Keywords

  • Electro-optic deflector
  • Electro-optic Q-switch
  • High repetition rate
  • Lasers
  • Short pulse width

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