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- Formation of photonic crystals by femtosecond laser microfabrication
- Misawa, Hiroaki; Juodkazis, Saulius; Sun, Hong-Bo; Matsuo, Shigeki; Nishii, Jyunji
- We report a novel photo-polymerization technique of well-defined three-dimensional (3D) layer-by-layer structures by two-photon absorption (TPA) in resins. By changing the structural parameters such as the rod diameter, pitch (intra-rod distance in plane) and angular orientation between neighbor planes different lattice types can be accomplished. This enables a systematic investigation of optical properties of photonic crystals (PhCs) made by TPA photo-polymerization. The solidified skeleton of PhC can be utilized as a mold to infiltrate solidifiable dye. Selective removal of the solidified resin can yield in a reverse PhC structures. When the defect-layer(s) are introduced into PhC during fabrication the PhC may act as a high-quality microcavity. A defect mode has been observed for the first time in thus-fabricated structures. Laser-microexplosion fabrication is another promising technique for the PhC and optical memory applications. To achieve an opening of a full-bandgap the media of high dielectric constant is of request (a high dielectric contrast is necessary).
- Publication type
- Conference paper
- Proceedings of SPIE: proceedings of the First International Symposium on Laser Precision Microfabrication, Omiya, Japan, 14-16 June 2000 / Isamu Miyamoto, Koji Sugioka and Thomas W. Sigmon (eds.), Vol. 4088, pp. 29-32
- Publication year
- Laser microfabrication; Photonic crystals; Photo-polymerisation; Optical memory; Twophoton absorption
- 0277-786X (series ISSN)
- 9780819437310, 081943731X
- Publisher URL
- Copyright © 2000 Society of Photo-Optical Instrumentation Engineers. This paper was originally published in Proceedings of SPIE (Vol. 4088), and is available from: http://dx.doi.org/10.1117/12.405730. The published version of the paper is reproduced here in accordance with the copyright policy of the publisher. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
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- Peer reviewed