Solid-State Optical Refrigeration to Sub-100 Kelvin Regime
Journal Article - Open Access
University of New Mexico Albuquerque United States
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Since the first demonstration of net cooling twenty years ago, optical refrigeration of solids has progressed to outperform all other solid-state cooling processes. It has become the first and only solid-state refrigerator capable of reaching cryogenic temperatures, and now the first solid-state cooling below 100 K. Such substantial progress required a multi-disciplinary approach of pump laser absorption enhancement, material characterization and purification, and thermal management. Here we present the culmination of two decades of progress, the record cooling to 91 K from room temperature.
- Lasers and Masers