Single-frequency diode-pumped Nd:YVO_4 laser at 914 nm for magnesium cold atom clock

摘要

A single-frequency continuous wave diode-pumped Nd:YVO_4 laser emitting high-quality polarized beam at 914 nm is presented. An intracavity etalon with a free spectral range of 500 GHz was used to obtain single-mode operation in a short linear cavity. Smooth frequency tuning over a range of 5GHz was demonstrated. A laser output of 300 mW was obtained at the half frequency of the ~1S_0 → ~3P_1 transition of Mg~(24) atoms (327.830 THz). The second harmonic of this laser can be used for high-resolution spectroscopy of magnesium atoms.