2008
Surface plasmon mediated transmission of subwavelength slits at THz frequencies
Publication
Publication
Phys. Rev. B , Volume 77 - Issue Article number: 113411 p. 1- 4
We present measurements and a numerical modeling that elucidate the role of surface plasmons in the resonant transmission of a subwavelength slit in a conducting material. By using THz time domain spectroscopy, we determine the Fabry–Pérot transmission resonances for a single slit formed from a wafer of a semiconductor with a surface plasma frequency in the THz frequency range. We measure large redshifts in the resonant frequencies close to the surface plasma frequency, which are 50% lower than the resonance frequencies expected well below the surface plasma frequency. This is an effect attributed to the coupling of plasmons on the adjacent surfaces of the slit.
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| doi.org/10.1103/physrevb.77.113411 | |
| Phys. Rev. B | |
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Isaac, T. H., Gómez Rivas, J., Sambles, J. R., Barnes, W. L., & Hendry, E. (2008). Surface plasmon mediated transmission of subwavelength slits at THz frequencies. Phys. Rev. B, 77(Article number: 113411), 1–4. doi:10.1103/physrevb.77.113411 |
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