Title :
THz bandpass filter based on sub-wavelength holes in free-standing metal thin-films
Author :
Renu Bhadresha;Johneph Sukham;A. Pattanayak;Goutam Rana;Prathmesh Deshmukh;S. P. Duttagupta;N. Sarwade;G. Jacob;S. S. Prabhu
Author_Institution :
Electrical Engineering Department, Veermata Jijabai Technological Institute, Mumbai
Abstract :
The design of a free-standing (substrate-less) metallic hole array is proposed for Terahertz frequencies. The bandpass filtering effect through free standing perforted Aluminium (Al) films is demonstrated using a square array of circular holes on Al films having thickness of ~ 11 μm. The effect of variation of periodicity and hole diameter on the transmittance due to excitation of surface plasmons and coupling between resonant and non-resonant modes is studied.
Keywords :
"Arrays","Plasmons","Resonant frequency","Metals","Rough surfaces","Surface roughness","Substrates"
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2015 40th International Conference on
Electronic_ISBN :
2162-2035
DOI :
10.1109/IRMMW-THz.2015.7327784
