Abstract
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 language | English |
|---|---|
| Pages (from-to) | 290-292 |
| Number of pages | 3 |
| Journal | Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams |
| Volume | 23 |
| Issue number | 2 |
| DOIs | |
| State | Published - Feb 2011 |
| Externally published | Yes |
Keywords
- Extra-cavity frequency conversion
- LBO crystal
- Laser techniques
- UV laser
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