Optical refrigerator using reflectivity tuned dielectric mirror

摘要: Optical refrigerator using reflectivity tuned dielectric mirrors (12, 14). Selected working materials (10) can be optically pumped monochromatic radiation such that the resulting fluorescence has an average photon energy higher than of pumping radiation; is, net anti-Stokes fluorescence. If quantum efficiency is sufficiently high, material will cool, and optical refrigeration achieved. Parallel mirrored faces are employed to increase path incident within by multiple reflections. Reflectivity which allow higher-energy photons readily escape from while inhibiting lower-energy consequently partially trapped in ultimately reabsorbed refluoresced at energies employed. This efficiency. An efficient geometry for cooling a disk having large diameter small height, since predominantly through mirror on one end face material.