Continuous wave uv radiation tunable from 285 nm to 400 nm by harmonic and sum frequency generation

Broadly tunable cw uv radiation has been generated by frequency doubling and sum frequency mixing in ADP, ADA, and RDP, using the output of a Kr laser, a Rh6G dye laser, and an oxazine 1 dye laser. Continuous tunable uv radiation has been obtained from 285 nm to 400 nm with a maximum power of 750 microW at 313 nm and with powers in excess of 5 microW from 290 nm to 390 nm.