Spontaneous parametric down conversion in a doubly resonant one-dimensional photonic crystal

Viola Introini, M. J. Steel, J. E. Sipe, L. G. Helt, Marco Liscidini*

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

We study spontaneous parametric down conversion (SPDC) in a one-dimensional photonic crystal designed to operate in a doubly resonant configuration, where the frequencies of the pump and the generated photons are both tuned to band-edge resonances. We investigate the spectral correlations of the generated photons as a function of the spectral width of the pump, and demonstrate that the SPDC generation rate can scale with the fifth power of the structure length in the limit of a quasi-continuous-wave pump. We show that such an unusual scaling can be simply connected with the scaling of second-harmonic generation in the same structure, illustrating the general link between spontaneous and stimulated parametric nonlinear processes.

Original languageEnglish
Pages (from-to)1244-1247
Number of pages4
JournalOptics Letters
Volume45
Issue number5
DOIs
Publication statusPublished - 1 Mar 2020

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