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Numerical modeling of coherent fluctuations of a laser beam using heat transfer in solids

M. OANE1,* , F. SCARLAT1, I. N. MIHAILESCU1

Affiliation

  1. National Institute for Laser, Plasma and Radiation Physics, P.O. Box MG 36 Magurele, R-76900 Bucharest, Romania

Abstract

The main goal of the present paper is to present a semi-classical approach regarding the quantum fluctuation in intensity of a laser beam. We suppose that we have a laser field and his fluctuations, which are suppose to be weak coherent electromagnetic fields at the same wave-length. We write down the heat equation [1-4] and analyze the temperature given by the “coupling” factor given by the interference between the two electromagnetic fields [4]. We consider a parallelepiped sample (semiconductor) with dimensions a, b, and c. The information given by this temperature gives us useful information about the fluctuations of the laser field (like for example the average number of photons produce by fluctuations). For solving the heat equation the integral transform technique was used. We also try to suggest in the present paper that with standard laser calorimetry it is possible to obtain useful information about laser intensity fluctuations..

Keywords

Laser beam fluctuations, Heat equation, Interference.

Submitted at: Nov. 29, 2007
Accepted at: Dec. 7, 2007

Citation

M. OANE, F. SCARLAT, I. N. MIHAILESCU, Numerical modeling of coherent fluctuations of a laser beam using heat transfer in solids, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 12, pp. 3852-3853 (2007)