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Measurement of air temperature using laser interferometry

Ali , Ahmad Hadi (2010) Measurement of air temperature using laser interferometry. In: International Conference on Fundamental and Applied Sciences, 15-17 June 2010 , Kuala Lumpur Convention Centre.

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Abstract

Abstract-Measurement of gas temperature is very crucial in laser induced plasma (LIP) and laser material interaction (LMI). Temperature monitoring devices such as thermocouple has some limitations. The thermocouple can not be placed at the laser focusing region since it will induce unwanted external effect. To overcome, a non-contact method is proposed by using interferometric technique. A simple Michelson interferometric was aligned to detect the pressure and refractive index change of ambient air. The temperature gradient of air were recorded and analyzed by using a video camera and phototransistors.From the observation results, it clearly shown that the change of air temperature in one arm of the interferometer will result in the fringes shift of the interference pattern.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: air temperature,laser interferometry, interferometry
Subjects: Q Science > QC Physics
Divisions: Faculty of Applied Science and Technology > Department of Science and Mathematics
Depositing User: Khairunnisa Ahmad
Date Deposited: 12 Jan 2011 06:37
Last Modified: 29 Apr 2011 06:41
URI: http://eprints.uthm.edu.my/id/eprint/623
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