Laser cooling in extended solids with taking into account the collective processes

摘要

The kinetics of the extended model of crystal doped by rare-earth ions in regime of anti-Stokes laser cooling has been considered taking into account the collective radiation effects. The system of master equations for impurities and pseudo-local phonons has been obtained. As would be expected, the collective radiation effects causes an acceleration in relaxation depletion of the phohon mode and therefore an increase of crystal cooling efficiency.