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 language | English |
|---|---|
| Pages (from-to) | 102-105 |
| Number of pages | 4 |
| Journal | IEEE Journal of Selected Topics in Quantum Electronics |
| Volume | 9 |
| DOIs | |
| Publication status | Published - Jan 2003 |
Keywords
- general relativity
- geometrical optics
- negative refraction
- MOVING-MEDIA
- REFRACTION
- GEOMETRY
- LIGHT
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