Multi-spectral image processing for the measurement of a spatial temperature distribution on the surface of a laser-heated microscopic object
K. M. Bulatova, Yu. V. Mantrovaa, A. A. Bykovab, M. Gaponovac, P. V. Zininad, A. S. Machikhinab, I. A. Trojane, V. I. Batshevac, I. B. Kutuzaa
a Scientific-Technological Center of Unique Instrumentation, Moscow, Russia
b Moscow Power Engineering University, Moscow, Russia
c Bauman Moscow State Technical University, Moscow, Russia
d Hawaii Institute of Geophysics and Planetology, University of Hawaii, Honolulu, USA
e FSRC Crystallography and Photonics, Russian Academy of Sciences, Moscow, Russia
In this paper, we demonstrate that combining a laser heating (LH) system with a tandem acousto-optical tunable filter (TAOTF) allows us to measure the temperature distribution (TD) across a laser-heated microscopic specimen. Spectral image processing is based on one-dimensional (1D) non-linear least squares fitting of the Planck radiation function. It is applied for determining the temperature T at each point $(x, y)$ of the specimen surface. It is shown that spectral image processing using the 1D non-linear least squares fitting allows measurement of the TD of the laser-heated microscopic specimen with higher precision and stability than those of the conventional linear least-squares fitting of the Wien approximation of Planck’s law.
laser heating, diamond anvil cell, temperature measurement, acousto-optical tunable filter, spectral imaging.
|Russian Science Foundation
|The Russian Science Foundation (project #17-12-01535) financially supported the work.
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K. M. Bulatov, Yu. V. Mantrova, A. A. Bykov, M. Gaponov, P. V. Zinin, A. S. Machikhin, I. A. Trojan, V. I. Batshev, I. B. Kutuza, “Multi-spectral image processing for the measurement of a spatial temperature distribution on the surface of a laser-heated microscopic object”, Computer Optics, 41:6 (2017), 864–868
Citation in format AMSBIB
\by K.~M.~Bulatov, Yu.~V.~Mantrova, A.~A.~Bykov, M.~Gaponov, P.~V.~Zinin, A.~S.~Machikhin, I.~A.~Trojan, V.~I.~Batshev, I.~B.~Kutuza
\paper Multi-spectral image processing for the measurement of a spatial temperature distribution on the surface of a laser-heated microscopic object
\jour Computer Optics
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