Direct generation of terahertz surface plasmon polaritons on a wire using electron bunches
- Eindhoven University of Technology, Coherence and Quantum Technology, P.O. Box 513, 5600 MB Eindhoven (Netherlands)
We propose to generate terahertz surface plasmon polaritons (SPPs) on a metal wire by launching electron bunches onto a tapered end of the wire. To show the potential of this method, we solve Maxwell's equations for the appropriate boundary conditions. The metal wire tip is modeled by a perfectly conducting semi-infinite cone. It is shown that the SPPs can be recovered from the idealized fields by well-known perturbation techniques. The emitted radiation is strongly concentrated into a narrow solid angle near the cone boundary for cones with a small opening angle. We calculate that, using currently available technology, subpicosecond SPPs with peak electric fields of the order of MV/cm on a 1 mm diameter wire can be obtained.
- OSTI ID:
- 21192437
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 78, Issue 11; Other Information: DOI: 10.1103/PhysRevB.78.115415; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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