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Title

Local observation of modes from three-dimensional woodpile photonic crystals with near-field microspectroscopy under supercontinuum illumination

Author(s)

Jia, Baohua;  Norton, Andrew H.;  Li, Jiafang;  Rahmani, Adel;  Asatryan, Ara A.;  Botten, Lindsay C.;  Gu, Min

Abstract

A near-field microscope coupled with a near-infrared (NIR) supercontinuum source is developed and applied to characterize optical modes in a three-dimensional (3D) woodpile photonic crystal (FC) possessing a NIR partial bandgap. Spatially resolved near-field intensity distributions under different illumination wavelengths demonstrate that the electric fields preferentially dwell in the polymer rods or in the gaps between rods, respectively, for frequencies below or above the stop gap, as predicted by the 3D finite-difference time-domain modeling. Near-field microspectroscopy further reveals that the position-dependent band-edge effect plays an important role in PC-based all-optical integrated devices.

Publication type

Journal article

Research centre

Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Centre for Micro-Photonics

Source

Optics Letters, Vol. 33, no. 10 (May 2008), p. 1093-1095

Publication year

2008

Keyword(s)

Diffraction;  Gratings;  FC;  Microscopy;  Near-field microscopy;  Near-infrared supercontinuum source;  NIR supercontinuum source;  Photonic crystals;  Spectroscopy;  Subwavelength structures

Publisher

Optical Society of America

ISSN

0146-9592

Publisher URL

http://dx.doi.org/10.1364/OL.33.001093

Copyright

Copyright © 2008 Optical Society of America. Published version of the paper reproduced here in accordance with the copyright policy of the publisher. This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/OL.33.001093. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

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