Highly directional emission from photonic crystals with a wide bandwidth

Zhaofeng Li*, Koray Aydin, Ekmel Ozbay

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

The authors numerically and experimentally demonstrated highly directional emission from photonic crystals. This was achieved by first splitting the incident electromagnetic wave into multiple beams using photonic crystal waveguide structures. The beams were then emitted out of the surface of a photonic crystal with the same phase, which resulted in a highly directional radiation pattern. The measured half power beam width was 4.8°, which was in good agreement with the calculated value of 4.1°. In contrast to the traditional beaming structures, their design did not involve gratinglike structures, which resulted in a wider operation bandwidth.

Original languageEnglish (US)
Article number121105
JournalApplied Physics Letters
Volume91
Issue number12
DOIs
StatePublished - 2007

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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