High efficiency extra-cavity frequency conversion UV laser

Bin Li, Jianquan Yao, Xin Ding, Fan Zhang, Peng Wang

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


High efficiency extra-cavity third harmonic generation(THG) of 355 nm beam has been developed. A laser diode(LD) end-pumped, acoustic-optical Q-switched Nd:YAG laser was used as the fundamental wave source. With an input pump power of 25 W, the average power of 6.2 W at 1064 nm was generated with the repetition rate of 12 kHz. Using the extra-cavity frequency conversion of three critical phase match LiO3O5 (LBO) crystals, 2.7 W third harmonic radiation at 355 nm was obtained. The optical-to-optical (1064 nm to 355 nm) conversion efficiency was up to 43.5%.

Original languageEnglish
Pages (from-to)290-292
Number of pages3
JournalQiangjiguang Yu Lizishu/High Power Laser and Particle Beams
Issue number2
StatePublished - Feb 2011
Externally publishedYes


  • Extra-cavity frequency conversion
  • LBO crystal
  • Laser techniques
  • UV laser


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