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

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:YAlO 3 crystal, cooled to the cryogenic temperatures, was used as an active medium. To minimize resonator losses, the cavity mirrors were d...

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Veröffentlicht in:	Applied physics. B, Lasers and optics Lasers and optics, 2021, Vol.127 (1)
Hauptverfasser:	Fibrich, Martin, Šulc, Jan, Švejkar, Richard, Jelínková, Helena
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied physics Cavity resonators Continuous radiation Cryogenic temperature Cryogenically-Cooled Lasers (Jacob I Mackenzie Engineering Indium gallium nitrides Laser pumping Lasers Nikolay Ter-Gabrielyan and Yung Fu Chen Optical Devices Optics Photonics Physical Chemistry Physics Physics and Astronomy Praseodymium Quantum Optics Semiconductor lasers Spectral emittance
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Zusammenfassung:	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:YAlO 3 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.
ISSN:	0946-2171 1432-0649
DOI:	10.1007/s00340-020-07546-w