Near-infrared photonic crystals with higher-order bandgaps generated by two-photon photopolymerization

被引：174

作者：

Straub, M ^{[1
]}

Gu, M ^{[1
]}

机构：

[1] Swinburne Univ Technol, Sch Biophys Sci & Elect Engn, Ctr Microphoton, Hawthorn, Vic 3122, Australia

来源：

OPTICS LETTERS | 2002年 / 27卷 / 20期

关键词：

D O I：

10.1364/OL.27.001824

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Three-dimensional photonic crystals with bandgaps of 1.5-2.3 mum in wavelength and with gap/midgap ratios of as much as 18% were generated efficiently by two-photon photopolymerization in a liquid resin. From 0.5-1.1-mW femtosecond-pulsed 540-nm light, woodpile structures consisting of 40 layers of elliptically shaped rods spaced at 350-500 nm were fabricated by focusing with a 1.3-N.A. objective. The high degree of correlation in these structures allowed the suppression of infrared transmission by as much as 50% as well as the observation of higher-order bandgaps. We also investigated the decrease in the gap wavelength on reduction of layer spacing, in-plane rod spacing, and rod size. (C) 2002 Optical Society of America.

引用

页码：1824 / 1826

页数：3

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