We develop a detailed theoretical model for laser cooling in Yb3+:YAG. The expressions for the fluorescence power density removed from the system with spontaneous emission, the power density radiated with stimulated emission, as well as the heat power density generated in the system by nonradiative decays on the impurities of the host material have been calculated. The influence of each of these power densities on the cooling process has been analyzed. We show, for the first time to our knowledge, how the temperature dependences of the different parameters of the system as well as the concentration of the impurities in the host influence the final temperature of the cooled sample.
© 2014 Optical Society of America
Lasers and Laser Optics
Original Manuscript: October 9, 2013
Revised Manuscript: December 12, 2013
Manuscript Accepted: December 13, 2013
Published: January 24, 2014
Galina Nemova and Raman Kashyap, "Laser cooling in Yb3+:YAG," J. Opt. Soc. Am. B 31, 340-348 (2014)