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28 March 2024
 
  » arxiv » quant-ph/9907085

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Output Spectrum of Single-Atom Lasers
J. P. Clemens ; P. R. Rice ; L. M. Pedrotti ;
Date 26 Jul 1999
Subject quant-ph
AbstractWe consider a laser composed of a single atom in a microcavity, with a coherent or incoherent pump. We consider both three- and four-level gain schemes, and examine the output spectrum of such lasers. We find that the linewidth generally scales as the inverse of the photon number. For large atom-field coupling, a vacuum-Rabi doublet structure is obtained. In the three-level case, this vacuum-Rabi splitting is apparent only for small intracavity photon numbers, and vanishes for large pumps. In the four-level scheme, the vacuum-Rabi structure appears at a nonzero pump level, and is maintained for large pumps, even when the intracavity photon number is larger than unity. This behavior is explained utilizing the quantum trajectory approach.
Source arXiv, quant-ph/9907085
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