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Proceedings Paper

Broadband phase-matched second-harmonic generation for narrow beams in planar two-dimensional photonic crystals
Author(s): C. Nistor; C. Cojocaru; J. Trull; K. Staliunas
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Paper Abstract

We show that photonic crystals made of materials with normal dispersion allow simultaneous broad angular range and broad spectral range phase matching in nonlinear wave mixing processes, in particular second harmonic generation. The configuration proposed ensures subdiffractive propagation regimes for both interacting waves and the slopes of the two dispersion curves (for the fundamental and second harmonic waves) at the phase-matching frequencies are similar (at frequencies slightly shifted from the phase-matched one the phase-mismatch remains very small). The numerical simulations confirm both the broad angular range (by the use of narrow beams, with the width of few wavelengths) and the broad spectral range (by the spectral width of the generated second harmonic beam) for the phase matching, showing a significant increasing of the conversion efficiency with respect to the case of plane waves in homogeneous materials.

Paper Details

Date Published: 13 May 2010
PDF: 6 pages
Proc. SPIE 7713, Photonic Crystal Materials and Devices IX, 771315 (13 May 2010); doi: 10.1117/12.854255
Show Author Affiliations
C. Nistor, Univ. Politècnica de Catalunya (Spain)
C. Cojocaru, Univ. Politècnica de Catalunya (Spain)
J. Trull, Univ. Politècnica de Catalunya (Spain)
K. Staliunas, Univ. Politècnica de Catalunya (Spain)
ICREA Barcelona (Spain)

Published in SPIE Proceedings Vol. 7713:
Photonic Crystal Materials and Devices IX
Hernán R. Míguez; Sergei G. Romanov; Lucio Claudio Andreani; Christian Seassal, Editor(s)

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