R. Knappe et al., TUNABLE UV-SOURCE BASED ON FREQUENCY-DOUBLED RED DIODE-LASER OSCILLATOR-AMPLIFIER SYSTEM, Electronics Letters, 34(12), 1998, pp. 1233-1234
Tunable UV radiation with an output power of 30 mu W is generated in t
he range from 334 to 340nm by single-pass frequency doubling of 400mW
of diode laser radiation in an LiIO3 crystal. The diode source is an e
xternal-cavity AlGaInP laser (668-680nm), which is amplified in a tape
red semiconductor amplifier.