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Proceedings Paper

Design and modeling of chi (2) second harmonic amplification in circular photonic crystal
Author(s): Alessandro Massaro; Vittorianna Tasco; Maria Teresa Todaro; Tiziana Stomeo; Roberto Cingolani; Massimo De Vittorio; Adriana Passaseo
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Paper Abstract

We analyze in this work the second harmonic amplification of χ(2) nonlinear process in membrane type GaAs circular photonic crystal. This unconventional kind of photonic crystal is well suited for the generation of whispering gallery modes due to the circular symmetric periodic pattern. The Gaussian beam of a fundamental pump signal at 1.55 μm defines a whispering gallery mode resonance and generates a second harmonic mode at 0.775 μm in the central missing hole micro-cavity. The periodic pattern and the micro-cavity are tailored and optimized in order to generate a second harmonic conversion efficiency of 50 %. We predict the resonances by an accurate 2D time domain model including χ(2) nonlinearity and also by a 3D Finite Element Method FEM. Moreover, by using a 3D membrane configuration, we predict a quality factor of the second harmonic mode of the order of 35000.

Paper Details

Date Published: 19 May 2009
PDF: 8 pages
Proc. SPIE 7354, Nonlinear Optics and Applications III, 73540J (19 May 2009); doi: 10.1117/12.820437
Show Author Affiliations
Alessandro Massaro, Univ. del Salento (Italy)
Vittorianna Tasco, Univ. del Salento (Italy)
Maria Teresa Todaro, Univ. del Salento (Italy)
Tiziana Stomeo, Univ. del Salento (Italy)
Roberto Cingolani, Univ. del Salento (Italy)
Massimo De Vittorio, Univ. del Salento (Italy)
Adriana Passaseo, Univ. del Salento (Italy)

Published in SPIE Proceedings Vol. 7354:
Nonlinear Optics and Applications III
Mario Bertolotti, Editor(s)

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