Experimental demonstration of frequency-degenerate bright EPR beams with a self-phase-locked optical parametric oscillator

We report the first experimental observation of bright EPR beams produced by a type-II optical parametric oscillator operating above threshold at frequency degeneracy. The degenerate operation is obtained by introducing a birefringent plate inside the cavity resulting in phase locking. After filteri...

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Bibliographic Details
Published in:arXiv.org 2008-06
Main Authors: Keller, Gaelle, D'Auria, Virginia, Treps, Nicolas, Coudreau, Thomas, Laurat, Julien, Fabre, Claude
Format: Article
Language:English
Subjects:
Beams (radiation)
Continuity (mathematics)
Locking
Optical Parametric Oscillators
Oscillators
Parametric amplifiers
Online Access:Get full text
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Summary:We report the first experimental observation of bright EPR beams produced by a type-II optical parametric oscillator operating above threshold at frequency degeneracy. The degenerate operation is obtained by introducing a birefringent plate inside the cavity resulting in phase locking. After filtering the pump noise, which plays a critical role, continuous-variable EPR correlations between the orthogonally polarized signal and idler beams are demonstrated.
ISSN:2331-8422
DOI:10.48550/arxiv.0804.0508