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APS » Journals » Phys. Rev. Lett. » Volume 94 » Issue 15
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Phys. Rev. Lett. 94, 157004 (2005) [4 pages]

Using Josephson Vortex Lattices to Control Terahertz Radiation: Tunable Transparency and Terahertz Photonic Crystals

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Sergey Savel’ev1, A. L. Rakhmanov1,2, and Franco Nori1,3
1Frontier Research System, The Institute of Physical and Chemical Research (RIKEN), Wako-shi, Saitama, 351-0198, Japan
2Institute for Theoretical and Applied Electrodynamics, Russian Academy of Sciences, 125412 Moscow, Russia
3Center for Theoretical Physics, Department of Physics, CSCS, University of Michigan, Ann Arbor, Michigan 48109-1120, USA

Received 20 December 2004; published 22 April 2005

The Josephson vortex (JV) lattice is a periodic array that scatters electromagnetic waves in the THz-frequency range. We show that JV lattices can produce a photonic band-gap structure (THz photonic crystal) with easily tunable forbidden zones controlled by the in-plane magnetic field. The scattering of electromagnetic waves by JVs results in a strong magnetic-field dependence of the reflection and transparency. Fully transparent or fully reflected frequency windows can be conveniently tuned by the in-plane magnetic field. These proposals are potentially useful for controllable THz filters.

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© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.94.157004
DOI:
10.1103/PhysRevLett.94.157004
PACS:
74.25.Qt, 42.70.Qs
 
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