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6 November 2000 Formation of photonic crystals by femtosecond laser microfabrication
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Proceedings Volume 4088, First International Symposium on Laser Precision Microfabrication; (2000)
Event: First International Symposium on Laser Precision Microfabrication (LPM2000), 2000, Omiya, Saitama, Japan
We report a novel photo-polymerization technique of well- defined three-dimensional 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).
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Hiroaki Misawa, Saulius Juodkazis, Hong-Bo Sun, Shigeki Matsuo, and Junji Nishii "Formation of photonic crystals by femtosecond laser microfabrication", Proc. SPIE 4088, First International Symposium on Laser Precision Microfabrication, (6 November 2000);


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