Crystal LiNbO 3 -Ho 3+ : Material for optical cooling

G. G. Demirkhanyan; E. P. Kokanyan; H. G. Demirkhanyan; D. Sardar; M. Aillerie

doi:10.3103/S1068337216010059

Crystal LiNbO₃-Ho³⁺: Material for optical cooling

Authors: Demirkhanyan G.G.¹^,2, Kokanyan E.P.¹^,2, Demirkhanyan H.G.¹, Sardar D.³, Aillerie M.⁴
Affiliations:
1. Armenian State Pedagogical Abovyan University
2. Institute for Physical Research
3. Texas University
4. Lorraine University
Issue: Vol 51, No 1 (2016)
Pages: 28-34
Section: Article
URL: https://journals.rcsi.science/1068-3372/article/view/227849
DOI: https://doi.org/10.3103/S1068337216010059
ID: 227849

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Abstract

The possibilities of LiNbO₃-Ho³⁺ crystals for optical cooling based on the anti-Stokes luminescence in the wavelength range 2000-2200 nm are investigated. The efficiency and cooling temperature under the continuous wave (CW) excitation at the wavelengths 2035-2071 nm by ~100 W power are estimated. It is shown that under the CW excitation at 2035 nm wavelength the maximum cooling temperature is equal to 2.5 K, and at 2071 nm wavelength is equal to 10.9 K.