Herein, the role that point defects have played over the last two decades in realizing solid‐
state laser refrigeration is discussed. A brief introduction to the field of solid‐state laser …

Laser cooling of a solid is achieved when a coherent laser illuminates the material in the red
tail of its absorption spectrum, and the heat is carried out by anti-Stokes fluorescence of the …

We revisit the spectroscopic characterization of ytterbium-doped LiYF_4 (Yb: YLF) for the
application of laser cooling. Time-dependent fluorescence spectroscopy reveals a …

Laser cooling of a solid is achieved when a coherent laser illuminates the material, and the
heat is extracted by annihilation of phonons resulting in anti-Stokes fluorescence. Over the …

Laser‐induced cooling or optical refrigeration of materials relies upon anti‐Stokes
fluorescence in which phonons are removed as radiation to induce cooling. The motivation …

From laser design to optical refrigeration, experimentally measured fluorescence spectra are
often utilized to obtain input parameters for predictive models. However, in materials that …

Hexagonal sodium yttrium fluoride with Na3 x Y2–x F6 stoichiometry (β-NaYF) is a
promising material for luminescence upconversion applications due to the narrow crystal …

We report the complete characterization of various cooling-grade Tm-doped crystals
including, to the best of our knowledge, the first demonstration of optical refrigeration in Tm …

A vibration-free, optical cooling refrigerator may imply revolutionary applications in different
fields, therefore it is vital to explore new materials suitable for laser cooling below the …

Optical cooling techniques of solid-state refrigerators, especially those toward the cryogenic
temperature range, have attracted considerable attention in the fields of space exploration …