Single-mode Three-level Laser Coupled To Thermal Reservoir

In this thesis, we have studied the quantum properties of the light produced by degeneraternthree-level laser in which three-level atoms available in a cavity coupled to a thermalrnreservoir are pumped from the lower to the upper level at the rate ra. Employing thernmaster equation, we have obtained the quantum Langevin equations for the cavity modernand atomic operators. With the aid of the solutions of these equations, we have calculatedrnthe mean and variance of the photon number, the quadrature variance, the quadraturernsqueezing and power spectrum for the cavity light.rnWe have found that the variance of the photon number is greater than the mean photonrnnumber, indicating that the light produced by degenerate three-level laser has super-rnPoissonian photon statistics. On the other hand, we have realized that the presencernof thermal reservoir decreases the quadrature squeezing. The maximum quadraturernsqueezing of the light generated by degenerate three-level laser is found to be 50% forrn n = 0 and 36:6% for n = 0:2 below a vacuum state leve

Get Full Work

Report copyright infringement or plagiarism