title: Solid-state optical refrigeration to sub-100 Kelvin regime.
abstract: 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.
authors: Dept. of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87131, USA.|Air Force Research Laboratories, Albuquerque, NM, USA.
authors: Seth D
authors: SD
authors: Melgaard
authors: Dept. of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87131, USA.
authors: Alexander R
authors: AR
authors: Albrecht
authors: Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
authors: Markus P
authors: MP
authors: Hehlen
authors: Dept. of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87131, USA.
authors: Mansoor
authors: M
authors: Sheik-Bahae