Abstract
A novel method for modeling optical refrigeration of
H
o
3
+
-doped fluoride crystals is presented
to obtain a laser-induced thermal modulation spectroscopy
(LITMoS)-compatible fitting expression of cooling efficiency in a
simple way. The quantum-yield frequency that corresponds to the output
energy of a specific transition channel is introduced to simplify
theoretical derivation. This model takes into account excitation
dependency of external quantum efficiency and can be applied in
theoretical analysis and experimental data fitting of optical
refrigeration systems with multiple
4
f
manifolds.
Funder
National Natural Science Foundation of
China
Natural Science Foundation of Tianjin
City
China Postdoctoral Science
Foundation
Program for Innovatative Research Team in
University of Tianjin
Subject
Atomic and Molecular Physics, and Optics,Statistical and Nonlinear Physics