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Angular anisotropy of the delay time of short pulses in impurity band based photonic crystals

  • V. Kimberg*
  • , F. Gel'mukhanov
  • , H. Ågren
  • *Corresponding author for this work
  • KTH Royal Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

We investigate the transmission of short pulses through one-dimensional impurity band based photonic crystals. We found a strong dependence of the delay time on the angle of incidence. The delay time is larger for larger incident angles for the transverse electrical mode, while the delay time of the transverse magnetic mode has a qualitatively different angular dependence, especially in the region below the Brewster angle. The strong anisotropy of the delay time is traced to the anisotropy of the group velocity which is directly related to the angular dependence of the impurity band structure.

Original languageEnglish
Pages (from-to)118-122
Number of pages5
JournalJournal of Optics A: Pure and Applied Optics
Volume7
Issue number3
DOIs
StatePublished - Mar 2005
Externally publishedYes

Keywords

  • Impurity band
  • Optical delay lines
  • Photonic crystal

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