Open AccessAnalysis of temperature and deformation fields in an optical coating sample
Author(s) -
Mingqiang Liu,
Bincheng Li
Publication year - 2008
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.57.3402
Subject(s) - materials science , deformation (meteorology) , thermal conduction , coating , optics , radius , absorptance , finite element method , transient (computer programming) , temperature gradient , laser , mechanics , composite material , physics , thermodynamics , computer security , quantum mechanics , computer science , operating system , reflectivity
By solving thermal conduction and thermo-elastic equations with an integral-transform method, a theory to describe the three-dimensional temperature and deformation distributions in an optical coating sample irradiated by a pulsed or square-wave modulated laser is developed for both transient and steady state cases. The theoretical simulations are compared with corresponding results of the finite-element method in time and space domains and good agreements are obtained. In addition, the influences of heating-beam radius and modulation frequency on the temperature and deformation distributions are discussed. Applications of the theoretical model to absorptance and deformation measurements of optical coatings are discussed.