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

Journal Article · Fri Jun 01 04:00:00 EDT 2001 · Journal of the Optical Society of America B

DOI:https://doi.org/10.1364/JOSAB.18.000846· OSTI ID:40203231

Koprulu, Kahraman G; Aytur, Orhan

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 configuration 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. {copyright} 2001 Optical Society of America

• Sponsoring Organization: (US)
• OSTI ID: 40203231
• Journal Information: Journal of the Optical Society of America B, Journal Name: Journal of the Optical Society of America B Journal Issue: 6 Vol. 18; ISSN 0740-3224
• Publisher: The American Physical Society
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLITUDES
CONFIGURATION
PARAMETRIC AMPLIFIERS