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In this thesis, we study the quantum properties of the light generated by a coherentlyrndriven two-level laser in which two level atoms available in a cavity coupled to arnvacuum reservoir are pumped to the upper level at a rate rca. Applying the masterrnequation for our system,we obtain the quantum Langevin equations for the cavityrnmode and atomic operators. With the aid of the solution of these equations,werncalculate the mean and variance of the photon number. Moreover, we determine thernpower spectrum and quadrature variance for the cavity light

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