2022 Innovation Thesis Prize: Rémi VICENTE
Headlines, Research
Rémi VICENTE received the 2022 Innovation Thesis Prize for her research work among PhDs graduating in 2021.
Thesis Title: Optical cryocooler design and demonstration for space applications
This type of cooling is based on Anti-Stokes shift observed in rare earth ions (Ytterbium) doped crystals. During the interaction process, a photon is absorbed by the crystal along with a small quantity of thermal energy (phonon) and re-emitted as a fluorescence photon at higher energy. A laser tuned to the crystal’s excitation frequency causes the material’s cooling, as long as the laser-crystal interaction is maximized inside an optical cavity and the fluorescence photons are evacuated out of the crystal. Recent publications on the subject shows that this technology is promising, allowing to attain cryogenic temperatures of about 100K with a compact design, no vibrations and reduced cost.
Key Words: Laser, Cryogenics, Rare earths, Space, Optics,Crystals
Doctoral School: ED of Physics
Research Laboratory: Institut Néel (CNRS)
Thesis Supervision: Gilles NOGUE and Arnaud GARDELEIN
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Updated on June 15, 2022