4.4 Article

Continuous-wave efficient cyan-blue Pr:YAlO3 laser pumped by InGaN laser diode

Journal

APPLIED PHYSICS B-LASERS AND OPTICS
Volume 127, Issue 1, Pages -

Publisher

SPRINGER HEIDELBERG
DOI: 10.1007/s00340-020-07546-w

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Funding

  1. Centre of Advanced Applied Natural Sciences [CZ.02.1.01/0.0/0.0/16_019/0000778]

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This study has successfully demonstrated the first continuous-wave quasi three-level laser emitting in the cyan-blue spectral range in praseodymium-doped oxide materials, achieving a high output power and efficiency.
We report on the first continuous-wave quasi three-level laser emitting in the cyan-blue spectral range in praseodymium-doped oxide materials, as we believe. Pr:YAlO3 crystal, cooled to the cryogenic temperatures, was used as an active medium. To minimize resonator losses, the cavity mirrors were directly deposited on the crystal faces to form a microchip geometry. More than half-Watt of the output power at 493 nm wavelength with a slope efficiency of 26% has been obtained under 3 W InGaN laser diode pumping at 447 nm wavelength.

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