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Proceedings Paper

Measuring a thermal expansion of thermoelectric materials by using in-line digital holography
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Paper Abstract

In this paper, thermal expansion measurement of thermoelectric materials has been done using digital holography technique. In the experimental setup, a diode laser, a digital camera and a sample on a hot plate were put in the same alignment, so it is call Digital in-line Holography (DIH). A laser beam was expanded parallel and then propagated through a thermoelectric sample which would be heated by a hot plate from a room temperature to 224 °C. The images of a TE sample were recorded by a digital camera and analyzed data by numerical image reconstruction. From our experimental measurement result, thermoelectric material was expanded with temperature slightly, and its thermal expansion coefficient (COE) was found equal to αTE = 2.25 × 10-6 °C-1.

Paper Details

Date Published: 31 October 2016
PDF: 5 pages
Proc. SPIE 10022, Holography, Diffractive Optics, and Applications VII, 100220C (31 October 2016); doi: 10.1117/12.2246434
Show Author Affiliations
Thanyarat Thong-on, King Mongkut's Institute of Technology Ladkrabang (Thailand)
Prathan Buranasiri, King Mongkut's Institute of Technology Ladkrabang (Thailand)

Published in SPIE Proceedings Vol. 10022:
Holography, Diffractive Optics, and Applications VII
Yunlong Sheng; Chongxiu Yu; Changhe Zhou, Editor(s)

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