TY - GEN
T1 - Terahertz modulation by schottky junction in metal-semiconductor-metal microcavities
AU - Isic, Goran
AU - Sinatkas, Georgios
AU - Zografopoulos, Dimitrios C.
AU - Vasic, Borislav
AU - Ferraro, Antonio
AU - Beccherelli, Romeo
AU - Kriezis, Emmanouil E.
AU - Belic, Milivoj
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/7/1
Y1 - 2019/7/1
N2 - We discuss arrays of metal-semiconductor-metal cavities as electrically tunable terahertz metasurfaces. The operation of the considered device is based on reverse biasing the Schottky junction formed between top metal strips and the n-type semiconductor buried beneath. The effective Drude permittivity of the cavity array is tuned by changing the depletion layer thickness via a gate bias applied between the strips and a back metal reflector. Combining Maxwell equations for terahertz waves with a drift-diffusion model for the semiconductor carriers into a multiphysics framework, we show that the proposed modulation concept is promising for a large part of the terahertz spectrum.
AB - We discuss arrays of metal-semiconductor-metal cavities as electrically tunable terahertz metasurfaces. The operation of the considered device is based on reverse biasing the Schottky junction formed between top metal strips and the n-type semiconductor buried beneath. The effective Drude permittivity of the cavity array is tuned by changing the depletion layer thickness via a gate bias applied between the strips and a back metal reflector. Combining Maxwell equations for terahertz waves with a drift-diffusion model for the semiconductor carriers into a multiphysics framework, we show that the proposed modulation concept is promising for a large part of the terahertz spectrum.
KW - Schottky junction
KW - Terahertz metasurface
KW - Terahertz modulation
KW - Tunable metamaterial
UR - http://www.scopus.com/inward/record.url?scp=85073064159&partnerID=8YFLogxK
U2 - 10.1109/ICTON.2019.8840432
DO - 10.1109/ICTON.2019.8840432
M3 - Conference contribution
AN - SCOPUS:85073064159
T3 - International Conference on Transparent Optical Networks
BT - 21st International Conference on Transparent Optical Networks, ICTON 2019
PB - IEEE Computer Society
T2 - 21st International Conference on Transparent Optical Networks, ICTON 2019
Y2 - 9 July 2019 through 13 July 2019
ER -