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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/4229

Authors: Solomon, Getachew
Advisors: Dr. Fesseha Kassahun
Keywords: laser light beams
c-number Langevin equations
Copyright: Jun-2011
Date Added: 8-Dec-2012
Publisher: A.A.U
Abstract: In this thesis we study the statistical properties of two-mode coherent and laser light beams in a cavity coupled to two-mode vacuum reservoir. We obtain c-number Langevin equations using the pertinent master equation. Making use of the solutions of the resulting c-number Langavien equations, we calculate the antinormally ordered characteristic function de ned in Heisenberg picture. With the help of this characteristic function, we determine the Q function for a two-mode coherent light as well as for a two mode laser light. Then the Q function is used to calculate the mean and variance of the photon number sum and di erence. On the other hand, using the aforementioned Q functions, we determine the Q function for the superposition of two-mode coherent and laser light beams. Finally, using the resulting Q function, we obtain the mean and the variance of the photon number sum and di erence.
Description: A Thesis Submitted to the School of Graduate Studies Addis Ababa University in Partial Ful_llment of the Requirement for the Degree of Master of Science in Physics
URI: http://hdl.handle.net/123456789/4229
Appears in:Thesis - Physics

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