Abstract

The appearance of powerful and effective laser diodes intended for pumping of solid-state lasers made it possible to create all-solid-state laser devices including compact all-solid-state tunable lasers.¹ Tunable lasers of this type known so far include complicated OPOs with intracavity frequency doublers for the UV and shortwavelength visible.² This version does not allow one to control the output radiation spectral bandwidth and other output parameters of the device although this is desirable for some cases. So, a better technical solution to create all-solid-state tunable UV laser would be to use d-f transitions of rare-earth ions in solids to obtain UV radiation^3,4 provided the active medium suitable for pumping by a solid-state laser source not by excimer lasers^3,4 is available.

© 1993 Optical Society of America