2 papers
physics.app-ph2019
Ultrafast modulation in a THz graphene-based flat absorber through negative photoconductivity
Anna C. Tasolamprou, Anastasios D. Koulouklidis, Christina Daskalaki +9
We present the experimental and theoretical study of an ultrafast graphene based thin film absorption modulator for operation in the THz regime. The flat modulator is composed of a…
physics.optics2019
Phase memory preserving harmonics from abruptly autofocusing beams
Anastasios D. Koulouklidis, Dimitris G. Papazoglou, Vladimir Yu. Fedorov +1
We demonstrate both theoretically and experimentally that the harmonics from abruptly auto-focusing ring-Airy beams present a surprising property, they preserve the phase distribut…