Lossless backward second-harmonic generation of extremely narrow subdiffractive beams in two-dimensional photonic crystals

C. Nistor, C. Cojocaru, T. J. Karle, F. Raineri, J. Trull, R. Raj, and K. Staliunas
Phys. Rev. A 82, 033805 – Published 8 September 2010

Abstract

We report efficient second harmonic generation using extremely narrow beams (with diameter of the order of the wavelength) that propagate in the self-collimation (or nondiffractive) regime in a two-dimensional photonic crystal. We design and numerically test an AlGaAs photonic crystal membrane, where both fundamental and generated second harmonic beams propagate without diffraction and without out-of-plane losses. The characteristics of the generated second harmonic that is mainly propagating in the backward direction and the conversion efficiency of the proposed scheme are obtained by nonlinear finite-difference time-domain numerical simulations.

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  • Received 10 June 2010

DOI:https://doi.org/10.1103/PhysRevA.82.033805

©2010 American Physical Society

Authors & Affiliations

C. Nistor1,*, C. Cojocaru1, T. J. Karle2, F. Raineri2,3, J. Trull1, R. Raj2, and K. Staliunas1,4

  • 1Universitat Politècnica de Catalunya, Departament de Física i Enginyeria Nuclear, Colom 11, E-08222 Terrassa, Spain
  • 2Laboratoire de Photonique et de Nanostructures, Route de Nozay, F-91460 Marcoussis, France
  • 3Université Paris Diderot, Paris, France
  • 4Institució Catalana de Reserca i Estudis Avançats (ICREA), Barcelona, Spain

  • *cristian.nistor@upc.edu

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Vol. 82, Iss. 3 — September 2010

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