GaN diode laser pumped solid-state lasers in the visible and UV spectral region

The continuous wave, diode pumped laser operation of Pr
³⁺
:YLiF
₄
(Pr:YLF) was reported. In contrast to other solid-state lasers, Pr-lasers need only a single nonlinear step for generation of wavelengths in the UV. For instance, UV-lasers can be realized in a simple and robust way by intracavity frequency doubling of Pr-lasers, operating on the fundamental wavelength in the visible spectral region. Recently, UV radiation has been generated by intracavity frequency doubling of an OPS-pumped Pr:YLF.