Void channel microstructures in resin solids as an efficient way to infrared photonic crystals

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/945

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Title: Void channel microstructures in resin solids as an efficient way to infrared photonic crystals
Author(s): Ventura, Michael J.; Straub, Martin; Gu, Min
Abstract: Microvoid channels were generated by local melting in a solidified polymer resin sample moving perpendicular to the focus of a high numerical-aperture objective under visible femtosecond-pulsed illumination. Channel size, surface quality, and high density channel vicinity depended on laser intensity and scanning speed. Electron microscope images revealed elliptical channel cross sections of 0.7-1.3 μm in lateral diameter and an elongation in the focusing direction of approximately 50%. A 20 layer woodpile-type photonic crystal structure with a 1.7 μm layer spacing and a 1.8 μm in-plane channel spacing provided a sharp peak in reflection and a suppression of infrared transmission in the stacking direction by 85% at wavelength 4.8 μm with a gap/midgap ratio of 0.11.
Publication type: Journal article
Research centre: Swinburne University of Technology. School of Biophysical Science and Electrical Engineering
Source: Applied optics, Vol. 82, no. 11 (2003), pp. 1649-1651
Publication year: 2003
Publisher: American Institute of Physics
Format: pp. 1649-1651
ISSN: 0003-6951
Publisher URL: Applied optics
Publisher URL: http://dx.doi.org/10.1063/1.1560870
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