THERMAL SCIENCE

International Scientific Journal

ANALYTICAL SOLUTION OF TRANSIENT TEMPERATURE IN CONTINUOUS WAVE END-PUMPED LASER SLAB: REDUCTION OF TEMPERATURE DISTRIBUTION AND TIME OF THERMAL RESPONSE

ABSTRACT
An analytical solution of transient 3-D heat equation based on integral transform method is derived. The result are compared with numerical solution, and good agreements are obtained. Minimization of response time and temperature distribution through a laser slab are tested. It is found that the increasing in the lateral convection heat transfer coefficient can significantly reduce the response time and the temperature distribution while no effect on response time is observed when changing pumping profile from Gaussian to top hat beam in spite of the latter reduce the temperature distribution, also it is found that dividing the pumping power between two slab ends might reduce the temperature distribution and it has no effect on thermal response time.
KEYWORDS
PAPER SUBMITTED: 2014-12-10
PAPER REVISED: 2015-11-09
PAPER ACCEPTED: 2015-11-29
PUBLISHED ONLINE: 2015-12-13
DOI REFERENCE: https://doi.org/10.2298/TSCI141210178S
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2017, VOLUME 21, ISSUE 3, PAGES [1223 - 1230]
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© 2017 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence