title: Development of a high-power deep-ultraviolet continuous-wave coherent light source for laser cooling of silicon atoms.
abstract: We developed a deep-UV single-mode coherent light source through two-stage highly efficient frequency conversions by use of external cavities. In the first stage, second-harmonic power of 500 mW was obtained by frequency doubling of a 746-nm Ti:sapphire laser with a conversion efficiency of 40%. In the second stage, 50-mW power at ~252nm was obtained by doubly resonant sum-frequency mixing of 373-nm light from the first-stage conversion and 780-nm light from a diode laser. The output performance of this deep-UV light source is sufficient for laser cooling of neutral silicon atoms.
authors: T
authors: T
authors: Fujii
authors: H
authors: H
authors: Kumagai
authors: K
authors: K
authors: Midorikawa
authors: M
authors: M
authors: Obara