K. Hayasaka et al., TUNABLE-397-NM LIGHT-SOURCE FOR SPECTROSCOPY OBTAINED BY FREQUENCY-DOUBLING OF A DIODE-LASER, Applied optics, 33(12), 1994, pp. 2290-2293
Continuous-wave radiation of 1.8 mW at 397 nm was generated by frequen
cy doubling a 100-mW GaAlAs diode laser in a lithium iodate crystal pl
aced in an external enhancement cavity. The radiation had a narrow lin
ewidth and a continuous frequency-scanning range of 6 GHz. The UV radi
ation obtained was applied to laser cooling of calcium ions stored in
a rf trap.