Precise Determination of Minimum Achievable Temperature for Solid-State Optical Refrigeration
Materials Science
2012-03-28 v1 Atomic Physics
Abstract
We measure the minimum achievable temperature (MAT) as a function of excitation wavelength in anti-Stokes fluorescence cooling of high purity Yb3+-doped LiYF4 (Yb:YLF) crystal. Such measurements were obtained by developing a sensitive noncontact thermometry that is based on a two-band differential luminescence spectroscopy using balanced photo-detectors. These measurements are in excellent agreement with the prediction of the laser cooling model and identify MAT of 110 K at 1020 nm, corresponding to E4-E5 Stark manifold transition in Yb:YLF crystal.
Cite
@article{arxiv.1203.5967,
title = {Precise Determination of Minimum Achievable Temperature for Solid-State Optical Refrigeration},
author = {Denis V. Seletskiy and Seth D. Melgaard and Richard I. Epstein and Alberto Di Lieto and Mauro Tonelli and Mansoor Sheik-Bahae},
journal= {arXiv preprint arXiv:1203.5967},
year = {2012}
}
Comments
10 pages, 6 figures