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      Analysis of the generation of amplitude-squeezed light with Gaussian-beam degenerate optical parametric amplifiers

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      Author(s)
      Köprülü, K. G.
      Aytür, O.
      Date
      2001-06
      Source Title
      Journal of the Optical Society of America B: Optical Physics
      Print ISSN
      0740-3224
      Publisher
      OSA Publishing
      Volume
      18
      Issue
      6
      Pages
      846 - 854
      Language
      English
      Type
      Article
      Item Usage Stats
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      Abstract
      We investigate the generation of amplitude-squeezed states with degenerate optical parametric amplifiers that are pumped by focused Gaussian beams. We present a model that facilitates the calculation of the squeezing level for an experimentally realistic cofiguration in which there is a Gaussian input signal beam that has the same confocal parameter and waist location as the Gaussian pump beam, with no restriction on the interaction length-to-confocal parameter ratio. We show that the 3-dB squeezing limit that was thought to be imposed by the Gaussian pump profile can be exceeded in the (previously uninvestigated) tight-focusing regime. We find the maximum possible amplitude squeezing in this regime to be 4.65 dB. However, it is possible to increase the squeezing level further by spatially filtering the tails of the output signal beam, resulting in squeezing levels in excess of 10 dB. (C) 2001 Optical Society of America.
      Keywords
      Sub-poissonian light
      Wave 2nd-harmonic generation
      Resonant-frequency doubler
      Quantum-well lasers
      Semiconductor-laser
      Noise
      Statistics
      Oscillator
      Feedback
      Limits
      Permalink
      http://hdl.handle.net/11693/11164
      Published Version (Please cite this version)
      http://dx.doi.org/10.1364/JOSAB.18.000846
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      • Department of Electrical and Electronics Engineering 4011
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