Open AccessEquivalent temperature concept in laser physics and its correspondence with thermodynamic temperature
Author(s) -
G A Aloian,
Denis Mukhankov,
Н. В. Коваленко,
O. A. Ryabushkin
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1391/1/012024
Subject(s) - laser , thermodynamic temperature , crystal (programming language) , radiation , sample (material) , absorption (acoustics) , thermodynamics , physics , temperature measurement , materials science , statistical physics , optics , computer science , programming language
The concept of the equivalent temperature of the crystal interacting with laser radiation, which was recently introduced in laser physics, is based on the dependence of the crystal sample eigenfrequencies on its temperature. This concept was successfully applied for measurements of low absorption coefficients of different optical materials. In this paper, we present an accurate identification of the equivalent temperature of the sample with its thermodynamic temperature basing on both mathematical modelling and experimental verification.