20 THz broadband generation using semi-insulating GaAs interdigitated photoconductive antennas.
We demonstrate broadband (20 THz), high electric field, terahertz generation using large area interdigitated antennas fabricated on semi-insulating GaAs. The bandwidth is characterized as a function of incident pulse duration (15-35 fs) and pump energy (2-30 nJ). Broadband spectroscopy of PTFE is shown. Numerical Drude-Lorentz simulations of the generated THz pulses are performed as a function of the excitation pulse duration, showing good agreement with the experimental data.
P J
PJ
Hale
J
J
Madeo
C
C
Chin
S S
SS
Dhillon
J
J
Mangeney
J
J
Tignon
K M
KM
Dani
D017076:Computer-Aided Design; D004553:Electric Conductivity; D004867:Equipment Design; D007834:Lasers; D008029:Lighting / Q000295:instrumentation*; D017785:Photons; D055053:Terahertz Radiation; D014159:Transducers