Demonstrates continuous-wave laser emission at 488 nm and its frequency-doubled output at 244 nm, suggesting a new compact source for laser applications.
Continuous-wave (CW) cyan and deep-ultraviolet lasers at 488 nm and 244 nm were realized using a Pr³⁺:YLF crystal. A folded V-type resonator with a Brewster-angle birefringent plate generate single-line oscillation at 488 nm, producing a maximum output power of 342 mW under 15 W diode pumping. Intracavity frequency doubling with a 3-mm BBO crystal generates 244 nm radiation, achieving 62 mW of output. This work represents the first demonstration of CW Pr3+:YLF laser emission at 488 nm and its extension to 244 nm, offering a compact approach for blue-cyan and deep-UV sources.
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Zheng et al. (2026) studied this question.
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