Affiliation:
1. University of Technology, Department of laser an optoelectronics Engineering, Baghdad, Iraq
Abstract
The analytical solution of transient temperature distribution and Tresca
failure stress in CW end- pumped laser rod has been derived using integral
transform method. The analytical result is compared with numerical solutions
presented by other works and good agreement has been found. Analytical
solution with its clear physical meaning and its explicit form permits to
predict the influence of various factors on the solution. The optical path
difference which gives a valuable means to quantify the optical properties of
laser material such as designed beam quality, will converge to a constant
value as steady state temperature distribution is reached. One can obtain the
dominate factors which affect the laser response to bring the laser rod to
the thermal equilibrium; it has been found that fast response can be achieved
by reducing pumping power, increasing extracted heat from the rod , choosing
a crystal having high thermal diffusivity and decreasing laser rod radius
while its volume remains constant. One final advantage of the analytical
solution is that a fast result can be obtained where the numerical solution
usually is a time consuming technique.
Publisher
National Library of Serbia
Subject
Renewable Energy, Sustainability and the Environment
Cited by
8 articles.
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