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OSA Advanced Photonics Congress

Modeling of Quasi-Phase-Matched Second Harmonic Generation in a Doubly Resonant Cavity

Carlos Mas Arabí, Pedro Parra‐Rivas, Charles Ciret, Simon-Pierre Gorza, François Léo

Published Jan 1, 2020• 0 citations
Publisher

Abstract

We propose a mean-field model to describe second harmonic generation in a resonator with a periodic variation of the effective nonlinearity. The model is obtained through an averaging of the propagation equations and boundary conditions.
DOI
10.1364/iprsn.2020.itu4a.5

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We analyze the squeezing characteristics of a singly resonant second-harmonic-generation system, in which only the fundamental light is confined in a plain cavity resonator, with consideration for fundamental depletion in a nonlinear crystal. The system was analyzed under the mean-field approximation, which neglects the variation of the field in the crystal, and as much as 9.5 dB of squeezing was predicted in the second-harmonic output. On the basis of the self-consistent method, we analyze the system, which is driven by such an intense fundamental input that the mean-field approximation is not valid, and predict that an arbitrary amount of squeezing will be available in this regime.