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Green, orange, and red Pr~(3+): YLiF_4 epitaxial waveguide lasers

机译:绿,橙和红Pr〜(3+):YLiF_4外延波导激光器

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摘要

Efficient guided laser oscillation in the visible spectral region is demonstrated with praseodymium-doped YLiF_4 layers grown by liquid phase epitaxy. By exciting Pr~(3+) ions at 479.2 nm with an optically pumped semiconductor laser, maximum slope efficiencies of 40% at 639 nm and 32% at 604 nm are obtained in a cw regime. Green laser oscillation at 522.5 nm, in a quasi-cw regime, with an average output power of 66 mW, is demonstrated for the first time, to our knowledge, in a crystalline fluoride epitaxial waveguide. Furthermore, a record efficiency of 60% at 639 nm in the quasi-cw regime is reported.
机译:通过液相外延生长的掺-YLiF_4层证明了在可见光谱区域内的有效引导激光振荡。通过用光泵浦半导体激光器激发479.2 nm处的Pr〜(3+)离子,在连续波模式下,最大斜率效率在639 nm处达到40%,在604 nm处达到32%。据我们所知,在晶体氟化物外延波导中,首次展示了准连续波状态下522.5 nm的绿色激光振荡,平均输出功率为66 mW。此外,据报道在准连续波模式下在639 nm处记录效率高达60%。

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