Short pulse duration of a 355-nm laser by extracavity sum-frequency mixing with a LiB3O5 (LBO) crystal

✍ Scribed by G. Wang; J. Liu; S. Liu; M. Liu; S. Liu; L. Li

• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 101 KB
• Volume: 5
• Category: Article
• ISSN: 1612-2011
• DOI: 10.1002/lapl.200810023

✦ Synopsis

A diode-pumped all-solid-state ultraviolet (UV) laser at 355 nm with pulse duration as short as 4.5 ns and peak power of 5.96 kW is proposed. The output UV light at 355 nm is obtained by extracavity sum-frequency mixing and has a power of 536 mW at the incident pump power of 15.65 W, corresponding to an optical-to-optical efficiency of 3.4%, the energy distribution of the UV light is near TEM~00~ and the power stability in an hour is better than ± 5.2%. Taking into account the thermal effects of the gain medium Nd:YVO~4~ crystal at high incident pump power, a plane-to-plane cavity is chosen to take advantage of the maximum pump power and obtain the compact configuration.