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Optical Engineering

Real-time measurement of the average temperature profiles in liquid cooling using digital holographic interferometry
Author(s): Carlos Guerrero-Mendez; Tonatiuh Saucedo Anaya; M. Araiza-Esquivel; Raúl E. Balderas-Navarro; Said Aranda-Espinoza; Alfonso López-Martínez; Carlos Olvera-Olvera
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Paper Abstract

We present an alternative optical method to estimate the temperature during the cooling process of a liquid using digital holographic interferometry (DHI). We make use of phase variations that are linked to variations in the refractive index and the temperature property of a liquid. In DHI, a hologram is first recorded using an object beam scattered from a rectangular container with a liquid at a certain reference temperature. A second hologram is then recorded when the temperature is decreased slightly. A phase difference between the two holograms indicates a temperature variation, and it is possible to obtain the temperature value at each small point of the sensed optical field. The relative phase map between the two object states is obtained simply and quickly through Fourier-transform method. Our experimental results reveal that the temperature values measured using this method and those obtained with a thermometer are consistent. We additionally show that it is possible to analyze the heat-loss process of a liquid sample in dynamic events using DHI.

Paper Details

Date Published: 27 October 2016
PDF: 6 pages
Opt. Eng. 55(12) 121730 doi: 10.1117/1.OE.55.12.121730
Published in: Optical Engineering Volume 55, Issue 12
Show Author Affiliations
Carlos Guerrero-Mendez, Univ. Autónoma de Zacatecas (Mexico)
Tonatiuh Saucedo Anaya, Univ. Autónoma de Zacatecas (México)
M. Araiza-Esquivel, Univ. Autónoma de Zacatecas (México)
Raúl E. Balderas-Navarro, Univ. Autónoma de San Luis Potosí (México)
Said Aranda-Espinoza, Univ. Autónoma de San Luis Potosí (México)
Alfonso López-Martínez, Univ. Autónoma de Zacatecas (México)
Carlos Olvera-Olvera, Univ. Autónoma de Zacatecas (Mexico)

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