Superprism phenomena in photonic crystals

Hideo Kosaka, Takayuki Kawashima

Research output: Contribution to journalArticlepeer-review

1045 Citations (Scopus)


Extraordinary angle-sensitive light propagation, which we call a superprism phenomenon, was demonstrated at optical wavelength in photonic crystals with three-dimensional-periodic structure fabricated on Si substrate. The propagation beam was swung from (Formula presented) to (Formula presented) with a slight change in the incident angle within (Formula presented) This effect together with wavelength sensitivity is at least two orders of magnitude stronger than that of the conventional prism. The incident-angle dependence including negative refraction and multiple beam branching was interpreted from highly anisotropic dispersion surfaces derived by photonic band calculation. These phenomena will be available to fabricate microscale light circuits on Si with LSI-compatible lithography techniques.

Original languageEnglish
Pages (from-to)R10096-R10099
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number16
Publication statusPublished - 1998

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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