Open AccessDynamic creation of a light-induced terahertz guided-wave resonator
Author(s) -
Lauren Gingras,
F. Blanchard,
Marcel P. Georgin,
David G. Cooke
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.002496
Subject(s) - terahertz radiation , resonator , optics , photoexcitation , materials science , optoelectronics , terahertz spectroscopy and technology , femtosecond , slow light , fano resonance , waveguide , resonance (particle physics) , narrowband , photonic crystal , laser , plasmon , physics , excitation , quantum mechanics , particle physics
We demonstrate a dynamic light-induced resonator for terahertz (THz) frequency light created on ultrashort time scales inside a planar waveguide. The resonator is created by patterned femtosecond photoexcitation of a one-dimensional array of photoconductive regions inside a silicon-filled parallel plate waveguide. The metal-dielectric photonic crystal is created on a 2 ps time scale, ten times faster than the 20 ps transit time of the THz light through the array. The resonance reveals itself through narrowband THz transmission enhancement with accompanying phase modulation producing an induced group delay of up to 10.8 ps near resonance.