Title :
Terahertz zone plates with integrated laser-ablated bandpass filters
Author :
MinkevicÌŒius, L. ; Voisiat, B. ; Mekys, A. ; VenckevicÌŒius, R. ; KasÌŒalynas, I. ; Seliuta, Dalius ; ValusÌŒis, G. ; RacÌŒiukaitis, G. ; TamosÌŒiuÌŒnas, V.
Author_Institution :
Center for Phys. Sci. & Technol., Vilnius, Lithuania
Abstract :
Properties of zone plates with integrated bandpass filters were simulated numerically and demonstrated experimentally for 0.76 THz frequency. Finite-difference time-domain simulations were used to predict properties of a conventional zone plate and laser-ablated zone plate with resonant filter areas. Zone plates were produced employing laser direct writing and characterised by Fourier spectroscopy and an optically pumped terahertz laser.
Keywords :
Fourier transform spectroscopy; band-pass filters; finite difference time-domain analysis; laser ablation; resonator filters; zone plates; Fourier spectroscopy; conventional zone plate; finite-difference time-domain simulation; frequency 0.76 THz; laser direct writing; laser-ablated bandpass filter; laser-ablated zone plate; optically pumped terahertz laser; resonant filter area; terahertz zone plate;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2012.3509
