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Phys. Rev. E 74, 026608 (2006) [7 pages]

Second-harmonic generation at angular incidence in a negative-positive index photonic band-gap structure

Giuseppe D'Aguanno,1 Nadia Mattiucci,2 Michael Scalora,1 and Mark J. Bloemer1
1Charles M. Bowden Research Center, RDECOM Building 7804, Redstone Arsenal, Alabama 35898-5000, USA
2Time Domain Corporation, Cummings Research Park, 7057 Old Madison Pike Huntsville, Alabama 35806, USA

Received 9 May 2006; revised 14 July 2006; published 23 August 2006

In the spectral region where the refractive index of the negative index material is approximately zero, at oblique incidence, the linear transmission of a finite structure composed of alternating layers of negative and positive index materials manifests the formation of a new type of band gap with exceptionally narrow band-edge resonances. In particular, for TM-polarized (transverse magnetic) incident waves, field values that can be achieved at the band edge may be much higher compared to field values achievable in standard photonic band-gap structures. We exploit the unique properties of these band-edge resonances for applications to nonlinear frequency conversion, second-harmonic generation, in particular. The simultaneous availability of high field localization and phase matching conditions may be exploited to achieve second-harmonic conversion efficiencies far better than those achievable in conventional photonic band-gap structures. Moreover, we study the role played by absorption within the negative index material, and find that the process remains efficient even for relatively high values of the absorption coefficient.

©2006 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevE.74.026608
DOI: 10.1103/PhysRevE.74.026608
PACS: 42.65.-k
KEYWORDS: photonic band gap, optical harmonic generation, photonic crystals, refractive index

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