By frequency-doubling of a pulsed dye laser iii beta-bariumborate, ultraviolet radiation down to 205 nm can be generated with high efficiency. A simple method of sum frequency generation (ω + 2ω + 3ω) extends the wavelength range close to 197 nm, in a cooled crystal even to 195 nm. The most interesting excimer laser wavelength 193 nm can be obtained by sum frequency generation using an infrared dye laser and an excimer laser operating at 248 nm. The lowest wavelength obtained in this way is 189 nm.

Date Published: 8 March 1989
PDF: 5 pages
Proc. SPIE 1017, Nonlinear Optical Materials, (8 March 1989); doi: 10.1117/12.949969

Published in SPIE Proceedings Vol. 1017:
Nonlinear Optical Materials
Gerald Roosen, Editor(s)