2020/11/23 by Mostafa Peysokhan, Peysokhan, Mostafa, Saeid Rostami +27
Engineering · Materials Science · Physics and Astronomy · #Applied Physics (physics.app-ph) #FOS: Physical sciences #Glass properties and applications #Materials Science (cond-mat.mtrl-sci) #Optical properties and cooling technologies in crystalline materials #Optics (physics.optics) #Solid State Laser Technologies #Thermal Radiation and Cooling Technologies
paper · pdf · doi:10.48550/arxiv.2011.11224
openalex publication_date 2020/11/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Laser cooling of a solid is achieved when a coherent laser illuminates the\nmaterial, and the heat is extracted by resulting anti-Stokes fluorescence. Over\nthe past year, net solid-state laser cooling was successfully demonstrated for\nthe first time in Yb-doped silica glass in both bulk samples and fibers. Here,\nwe improve the previously published results by one order of magnitude and\nreport more than 6K of cooling below the ambient temperature. This result is\nthe lowest temperature achieved in solid-state laser cooling of silica glass to\ndate to the best of our knowledge. We present details on the experiment\nperformed using a 20W laser operating at 1035nm wavelength and temperature\nmeasurements using both a thermal camera and the differential luminescence\nthermometry technique.\n