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The continuous wave, diode pumped laser operation of Pr3+:YLiF4 (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....
A magnesium-oxide doped periodically poled lithium-niobate with segments of cascaded poling periods as a nonlinear crystal for intracavity frequency doubling of an optically pumped semiconductor disk-laser to the green spectral range is presented. Results show temperature-dependent second harmonic generation and a maximum output power of 62 mW at 525 nm corresponding to a 24% conversion efficiency.
19 mW of continuous-wave ultraviolet radiation at 320 nm with ~9% optical-to-optical efficiency is demonstrated by intracavity frequency-doubling of a Pr:LiYF4 laser, excited by an optically pumped semiconductor laser.
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