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A Pr-doped double-clad structured waterproof fluoride glass fiber (Pr:DC-WPFGF) was successfully drawn, and the laser oscillation was demonstrated. The maximum output power was measured as 251.7 mW at 639.0 nm. The Pr:DC-WPFGF was designed to be single-mode fiber, with 0.08 of NA and 5.2 µm of core diameter. The beam-quality factor, M2, was measured and evaluated to be 1.0.

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This page is a summary of: Single-mode visible laser oscillation in Pr-doped double-clad structured waterproof fluoro-aluminate glass fibre, Electronics Letters, May 2016, the Institution of Engineering and Technology (the IET),
DOI: 10.1049/el.2016.0125.
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