| Issue |
EPL
Volume 78, Number 4, May 2007
|
|
|---|---|---|
| Article Number | 44001 | |
| Number of page(s) | 4 | |
| Section | Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics | |
| DOI | https://doi.org/10.1209/0295-5075/78/44001 | |
| Published online | 27 April 2007 | |
A method of controlling wave propagation in initially spatially periodic media
1
Laboratoire d'Acoustique de l'Université du Maine UMR-CNRS 6613 - Av. Olivier Messiaen, 72085 Le Mans Cedex 9, France
2
Laboratoire de Physique de l'Etat Condensé UMR-CNRS 6087 - Av. Olivier Messiaen, 72085 Le Mans Cedex 9, France
Received:
22
January
2007
Accepted:
27
March
2007
General physical arguments as well as an analytical theory for a particular system indicate that in addition to a traditional method of wave control through gap opening in an allowed frequency band there exists an opportunity to control waves through window opening in a forbidden frequency band. By introducing additional (second) periodicity in an initially periodic material it is possible to guide high-frequency waves in the directions initially forbidden for their propagation.
PACS: 43.35.Gk – Phonons in crystal lattices, quantum acoustics / 42.70.Qs – Photonic bandgap materials / 43.20.Bi – Mathematical theory of wave propagation
© Europhysics Letters Association, 2007
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