Notes on Waves With Negative Phase Velocity

Ulf Leonhardt

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

Negative refraction is a wave phenomenon beyond geometrical optics-it depends on the way waves behave when their phase velocity reaches a zero. Various forms of linear wave processes in media can be concisely described in one wave equation that is inspired by the interpretation of a medium as an effective space-time geometry. Depending on the conformal factor of the effective metric, the waves may show positive or negative refraction. For electromagnetic waves in two-dimensional dielectrics the conformal factor corresponds to the impedance.

Original languageEnglish
Pages (from-to)102-105
Number of pages4
JournalIEEE Journal of Selected Topics in Quantum Electronics
Volume9
DOIs
Publication statusPublished - Jan 2003

Keywords

  • general relativity
  • geometrical optics
  • negative refraction
  • MOVING-MEDIA
  • REFRACTION
  • GEOMETRY
  • LIGHT

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