Surface-Plasmon-Polaritons at the Interface of Graded Index Material and Semiconductor

Terahertz Optoelectronics with Surface Plasmon Polariton Diode

The field of plasmonics has experience a renaissance in recent years by providing a large variety of new physical effects and applications. Surface plasmon polaritons, i.e. the collective electron oscillations at the interface of a metal/semiconductor and a dielectric, may bridge the gap between electronic and photonic devices, provided a fast switching mechanism is identified. Here, we demonst...

Long-range surface plasmon polaritons at THz frequencies in thin semiconductor layers

We present a theoretical investigation of THz long-range surface plasmon polaritons propagating on thin layers of InSb. The metallic behavior of doped semiconductors at THz frequencies allows the excitation of surface plasmon polaritons with propagation and confinement lengths that can be actively controlled. This control is achieved by acting on the free carrier density, which can be realized ...

Dispersion relation for surface plasmon polaritons on a Schottky junction.

The conventional analysis of surface plasmon modes on dielectric-metal interfaces requires clearly defining the permittivity discontinuity at the interface. A pivotal assumption of such an analysis is that the formation of the dielectric-metal interface does not change the material properties and the materials forming the interface have identical permittivities before and after the formation of...

Coupling of Terahertz Surface Plasmon Polaritons in Corrugated Stacks of Dielectric and Semiconductor

We present a theoretical approach that terahertz surface plasmon polaritons (THzSPPs) are tuned by temperature in a stack of dielectric and semiconductor with periodic corrugations. Based on Rayleigh hypothesis, we show that when THz electromagnetic wave illuminates the waved stack, temperature-dependent THz-SPPs are excited. At resonant modes, reflection dips or Fano-type resonance shape are f...

Infrared Surface Plasmon Polaritons on Semiconductor, Semimetal and Conducting Polymer