Physics – Quantum Physics
Scientific paper
2011-05-07
Physics
Quantum Physics
9 pages, 1 figure; a slight modification in the definition for the quadrature squeezing of the output light
Scientific paper
We analyze the quantum properties of the light generated by a three-level laser in which the three-level atoms available in a closed cavity are pumped to the top level by means of electron bombardment. We carry out our analysis by putting the noise operators associated with a vacuum reservoir in normal order. It is found that the three-level laser generates squeezed light under certain conditions, with the maximum intracavity squeezing being 50% below the coherent-state level. The maximum squeezing and the maximum mean photon number of the laser light occur when the laser is operating well above threshold. In addition, we have established that the quadrature squeezing of the output light in any frequency interval is the same as that of the cavity light.
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