Dynamics Of Three-level Laser Pumped By Electron Bombardment

In this project, we discuss the quantum properties of the light generated byrna three-level laser with the closed cavity and coupled to a vacuum reservoir.rnThe three-level atoms available in the closed cavity are pumped from thernbottom to the top level by means of electron bombardment. Our analysis isrncarried out by putting the noise operators associated with the vacuum reser-rnvoir in normal order. We have found that the light emitted from the top levelrnis in a chaotic state in any regime of laser operation. On the other hand, thernlight emitted from the intermediate level is in a coherent state when the laserrnis operating well above threshold and is chaotic when the laser is operatingrnat threshold. The maximum quadrature squeezing of the superposed lightrnmodes is found to be 50 % below the vacuum-state level. We have shownrnthat the maximum local quadrature squeezing is 64.5 %: Moreover the localrnquadrature squeezing increases with the frequency interval and approachesrnto the global quadrature squeezingrnKeywords: Stimulated emission, Photon statistics, Global and Local Quadra-rnture squeezing

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