Formation of photonic crystals by femtosecond laser microfabrication

Hiroaki Misawa, Saulius Juodkazis, H. B. Sun, Shigeki Matsuo, Jyunji Nishii

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


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).

Original languageEnglish
Pages (from-to)29-32
Number of pages4
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2000
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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