Eur. Phys. J. Special Topics 203, 217-225 (2012)
https://doi.org/10.1140/epjst/e2012-01545-y

Regular Article

Classical and quantum effects in spatially modulated optical parametric oscillators

Institute for Cross-Disciplinary Physics and Complex Systems, IFISC (CSIC-UIB), 07122 Palma de Mallorca, Spain

^a e-mail: roberta@ifisc.uib-csic.es

Received: 13 January 2012
Revised: 21 February 2012
Published online: 11 April 2012

Abstract

We study the effects of transverse spatial modulations in a multimode degenerate optical parametric oscillator. Intracavity photonic crystals allow us to tune the instability threshold and improve entanglement above threshold. Here we compare such results with the case in which the modulation is in the injected field profile.