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Title

Superprism phenomena in waveguide-coupled woodpile structures fabricated by two-photon polymerization

Author(s)

Serbin, Jesper;  Gu, Min

Abstract

Here we give theoretical as well as experimental evidence for wavelength dependent super-refraction phenomena in waveguide coupled superprisms based on polymer woodpile structures. The photonic crystals were fabricated by means of the two-photon polymerization technique and have a partial band gap at near infrared wavelengths. To visualize the superprism effect the light propagating inside the woodpile structure was imaged using a CCD for a continuous range of wavelengths slightly above the band gap frequency. We were able to demonstrate a change of propagation direction from +50° (positive refraction) to -10° (negative refraction) with respect to the crystal surface normal for a wavelength range between 860 nm and 960 nm. Our results show the great potential of these low refractive index three-dimensional crystals, fabricated in a very fast and single-step process, to serve directly as functional micro-optical devices in the near infrared wavelength regime.

Publication type

Journal article

Research centre

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

Source

Optics Express, Vol. 14, no. 8 (2006), p. 3563-3568

Publication year

2006

Publisher

Optical Society of America

ISSN

1094-4087

Publisher URL

http://dx.doi.org/10.1364/OE.14.003563

Copyright

Copyright © 2006 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://www.opticsinfobase.org/abstract.cfm?URI=oe-14-8-3563. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

Full text

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