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Title

Engineering stop gaps of inorganic-organic polymeric 3D woodpile photonic crystals with post-thermal treatment

Author(s)

Li, Jiafang;  Jia, Baohua;  Gu, Min

Abstract

A method is reported for improving the spatial resolution and engineering the stop gaps of the inorganic-organic 3D woodpile photonic crystals (PhCs). The approach is based on the two-photon polymerization (2PP) of an inorganic-organic hybrid material and a post-thermal treatment (PTT) process. The effects of PTT on polymerized ID, 2D and 3D structures have been characterized. Ultimately, the feature size of the suspended rods has been reduced to ∼33 nm and the spatial resolution of inorganic-organic 3D woodpile PhCs has been improved from -150 nm to -86 nm. The approach is also demonstrated as a powerful tool to engineer the stop gaps of 3D PhCs. In particular, a combination of PTT and the threshold fabrication technique leads to the stop gap of a 3D woodpile PhC that can be tuned over a large wavelength range of -318 nm from the near-infrared to visible region.

Publication type

Journal article

Research centre

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

Source

Optics Express, Vol. 16, no. 24 (Nov 2008), pp. 20073-20080

Publication year

2008

Keyword(s)

2PP;  Inorganic-organic 3D woodpile;  Photonic crystals;  Polymerization;  Post-thermal treatment;  PTT;  Two-photon polymerization

Publisher

Optical Society of America

ISSN

1094-4087

Publisher URL

http://dx.doi.org/10.1364/OE.16.020073

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/OE.16.020073. 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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