Non-phase-matched enhancement of second-harmonic generation in multilayer nonlinear structures with internal reflections

Marco Centini; Giuseppe D'Aguanno; Letizia Sciscione; Concita Sibilia; Mario Bertolotti; Michael Scalora; Mark J Bloemer

doi:10.1364/ol.29.001924

Non-phase-matched enhancement of second-harmonic generation in multilayer nonlinear structures with internal reflections

Opt Lett. 2004 Aug 15;29(16):1924-6. doi: 10.1364/ol.29.001924.

Authors

Marco Centini¹, Giuseppe D'Aguanno, Letizia Sciscione, Concita Sibilia, Mario Bertolotti, Michael Scalora, Mark J Bloemer

Affiliation

¹ Dipartimento di Energetica, Università di Roma La Sapienza, Via Scarpa 16, 00161 Rome, Italy.

PMID: 15357361
DOI: 10.1364/ol.29.001924

Abstract

Traditional notions of second-harmonic generation rely on phase matching or quasi phase matching to achieve good conversion efficiencies. We present an entirely new concept for efficient second-harmonic generation that is based on the interference of counterpropagating waves in multilayer structures. Conversion efficiencies are an order of magnitude larger than with phase-matched second-harmonic generation in similar multilayer structures.