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Efficient Second Harmonic Generation Through Selective Photonic Crystal-Microcavity Coupling

Letizia, Rosa and Obayya, Salah S. A. (2009) Efficient Second Harmonic Generation Through Selective Photonic Crystal-Microcavity Coupling. IEEE Journal of Lightwave Technology, 27 (21). pp. 4763-4772. ISSN 0733-8724

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Abstract

In this paper, a new 2-D frequency converter based on second harmonic generation (SHG) in GaAs photonic crystal waveguides is proposed. The input waveguide, where the second order nonlinear process takes place, is coupled to a secondary waveguide that is designed to allow only SH propagation. A row of photonic crystal microcavity resonators is then placed parallel to the waveguides in order to assist the field coupling. By tuning the resonance of the microcavities at second harmonic wave, the waveguides-microcavities arrangement showed good enhancement of conversion efficiency and selectivity. The performance of the proposed frequency converter has been analyzed by using multiresolution time domain (MRTD) scheme developed for nonlinear problems in conjunction with uniaxial perfectly matched layer (UPML) boundary conditions that rigorously truncate the computational window.

Item Type: Article
Journal or Publication Title: IEEE Journal of Lightwave Technology
Uncontrolled Keywords: Frequency conversion ; multiresolution time domain (MRTD) ; photonic crystals ; second harmonic generation (SHG) ; waveguide-microcavities coupling
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Departments: Faculty of Science and Technology > Engineering
ID Code: 57769
Deposited By: ep_importer_pure
Deposited On: 22 Aug 2012 09:28
Refereed?: Yes
Published?: Published
Last Modified: 24 Jan 2014 05:31
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/57769

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