Analysis of the generation of amplitude-squeezed light with Gaussian-beam degenerate optical parametric amplifiers
Date
2001-06Source 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
ArticleItem Usage Stats
166
views
views
195
downloads
downloads
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 lightWave 2nd-harmonic generation
Resonant-frequency doubler
Quantum-well lasers
Semiconductor-laser
Noise
Statistics
Oscillator
Feedback
Limits