Skirting terahertz waves in a photo-excited nanoslit structure

SHALABY M., Fabianska J., PECCIANTI M., Ozturk Y. , VIDAL F., SIGG H., ...Daha Fazla

APPLIED PHYSICS LETTERS, cilt.104, 2014 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 104 Konu: 17
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1063/1.4871305


Terahertz fields can be dramatically enhanced as they propagate through nanometer-sized slits. The enhancement is mediated by a significant accumulation of the induced surface charges on the surrounding metal. This enhancement is shown here to be dynamically modulated while the nanoslits are gradually shunted using a copropagating optical beam. The terahertz fields are found to skirt the nanoscale photo-excited region underneath the slits, scattering to the far field and rigorously mapping the near field. (C) 2014 AIP Publishing LLC.