Improved gain-switched laser operation of cerium-doped LiCaAlF6 (Ce3+:
LiCAF) and LiSrAlF6 (Ce3+:LiSAF) crystals is described. Pumping with t
he quadrupled Nd:YAG laser at 266nm, the Ce3+:LiCAF laser delivers an
output energy of 10.2 mJ at an operating wavelength of 288 nm, with a
corresponding slope efficiency of 28%, and tunability from 281 to 315n
m. For the Ce3+:LiSAF laser, an energy of 5.4 mJ at 290nm, slope effic
iency of 16%, and tuning range extending from 283 - 313 nm are obtaine
d.