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1 May 2014 Cryogenically cooled Pr:YAlO3 laser operating at 747 nm, 662 nm, and 622 nm wavelengths
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Influence of temperature on Pr:YAlO3 laser behaviour in the near-infrared (747 nm), red (662 nm), orange (622 nm), and green (547 nm) spectral range is reported. To realize Pr:YAlO3 laser systems operating down to the cryogenic temperature, a microchip geometry formed by dielectric films directly deposited on the crystal facets has been proposed and employed. This geometry is particularly attractive due to its compact and rugged design. The best results were demonstrated for the 747 nm wavelength; more than 300 mW of output power with the slope efficiency over 55 % has been extracted from the cryogenically cooled Pr:YAlO3 active material under 1-W InGaN diode pumping. In addition, the first diode-pumped Pr:YAlO3 orange laser is described, as we believe.
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Martin Fibrich, Jan Šulc, and Helena Jelínková "Cryogenically cooled Pr:YAlO3 laser operating at 747 nm, 662 nm, and 622 nm wavelengths", Proc. SPIE 9135, Laser Sources and Applications II, 91351O (1 May 2014);

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