Continuous-wave coherent radiation tunable near 194 nm has been generated by sum-frequency generation in β-BaB2O4 placed inside an external enhancement cavity. An output power of 16 µW has been obtained with a walk-off-compensated configuration of β-BaB2O4 crystals.
© 1992 Optical Society of America
Masayoshi Watanabe, Kazuhiro Hayasaka, Hidetsuka Imajo, and Shinji Urabe, "Continuous-wave sum-frequency generation near 194 nm in β-BaB2O4 crystals with an enhancement cavity," Opt. Lett. 17, 46-48 (1992)