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, 2017, Volume 41, Issue 6,Pages <nobr>864

This article is cited in 14 papers

OPTO-IT

Multi-spectral image processing for the measurement of a spatial temperature distribution on the surface of a laser-heated microscopic object

K. M. Bulatov^a, Yu. V. Mantrova^a, A. A. Bykov^ab, M. Gaponov^ac, P. V. Zinin^ad, A. S. Machikhin^ab, I. A. Trojan^e, V. I. Batshev^ac, I. B. Kutuza^a

^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

Abstract: 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.

Keywords: laser heating, diamond anvil cell, temperature measurement, acousto-optical tunable filter, spectral imaging.

Received: 03.10.2017
Accepted: 08.11.2017

Language: English

DOI: 10.18287/2412-6179-2017-41-6-864-868