Pulsed 456 nm deep-blue light generation by acoustooptical Q-switching and intracavity frequency doubling of Nd:GdVO4

✍ Scribed by J. Gao; X. Yu; F. Chen; X.D. Li; R.P. Yan; Z. Zhang; J.H. Yu; Y.Z. Wang

• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 150 KB
• Volume: 5
• Category: Article
• ISSN: 1612-2011
• DOI: 10.1002/lapl.200810027

✦ Synopsis

We present what is, to the best of our knowledge, the first pulsed deep-blue laser at 456 nm by acousto-optical Qswitching and intracavity frequency doubling of a diode-endpumped Nd:GdVO 4 laser on the 4 F 3/2 → 4 I 9/2 transition at 912 nm. When the incident pump power is 36 W, the maximum single pulse energy of 44.1 µJ, pulse duration of 140 ns and peak power of 315 W are achieved at 10 kHz; the maximum average power of 770 mW, pulse duration of 200 ns and peak power of 193 W are obtained at 20 kHz. The fluctuation of the blue output power is less than 2.4% within the given 20 min at the maximum blue output power.

Incident pump power, W Pulse duration at 456 nm, ns