Open AccessTerahertz zone plates with integrated laser‐ablated bandpass filters
Author(s) -
Minkevičius L.,
Voisiat B.,
Mekys A.,
Venckevičius R.,
Kašalynas I.,
Seliuta D.,
Valušis G.,
Račiukaitis G.,
Tamošiu¯nas V.
Publication year - 2013
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2012.3509
Subject(s) - terahertz radiation , band pass filter , laser , materials science , optics , far infrared laser , optoelectronics , physics
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.