Harnessing quadratic optical response of two-dimensional materials through active microcavities

Alessandro Ciattoni and Carlo Rizza
Phys. Rev. A 90, 033828 – Published 17 September 2014

Abstract

We propose a method for efficiently harnessing the quadratic optical response of two-dimensional graphenelike materials by theoretically investigating second-harmonic generation from a current biased sheet placed within a planar active microcavity. We show that, by tuning the cavity to resonate at the second-harmonic frequency, a highly efficient frequency doubling process is achieved (several orders of magnitude more efficient than the free-standing sheet). The efficiency of the process is not due to phase matching, which is forbidden by the localization of the nonlinear quadratic response on the two-dimensional atomic layered material, but stems from the interplay between the two-dimensional planar geometry of the nonlinear medium and the field oscillation within the active cavity near its threshold. The suggested method can easily be extended to different wave interactions and nonlinearities, and therefore it can represent a basic tool for efficiently exploiting nonlinear optical properties of two-dimensional materials.

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  • Received 23 June 2014

DOI:https://doi.org/10.1103/PhysRevA.90.033828

©2014 American Physical Society

Authors & Affiliations

Alessandro Ciattoni1,* and Carlo Rizza2,1

  • 1Istituto SPIN, Consiglio Nazionale delle Ricerche, Via Vetoio 10, 67100 L'Aquila, Italy
  • 2Dipartimento di Scienza e Alta Tecnologia, Università dell'Insubria, Via Valleggio 11, 22100 Como, Italy

  • *Corresponding author: alessandro.ciattoni@aquila.infn.it

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Vol. 90, Iss. 3 — September 2014

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