Local observation of modes from three-dimensional woodpile photonic crystals with near-field microspectroscopy under supercontinuum illumination
Optics Letters, Vol. 33, Issue 10, pp. 1093-1095 (2008)
http://dx.doi.org/10.1364/OL.33.001093
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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 (PC) 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.
© 2008 Optical Society of America
OCIS Codes
(300.0300) Spectroscopy : Spectroscopy
(180.4243) Microscopy : Near-field microscopy
(050.5298) Diffraction and gratings : Photonic crystals
(050.6624) Diffraction and gratings : Subwavelength structures
ToC Category:
Microscopy
History
Original Manuscript: February 22, 2008
Revised Manuscript: April 5, 2008
Manuscript Accepted: April 5, 2008
Published: May 13, 2008
Citation
Baohua Jia, Andrew H. Norton, Jiafang Li, Adel Rahmani, Ara A. Asatryan, Lindsay C. Botten, and Min Gu, "Local observation of modes from three-dimensional woodpile photonic crystals with near-field microspectroscopy under supercontinuum illumination," Opt. Lett. 33, 1093-1095 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-10-1093
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