Title :
Fourier gratings used as THz multiplexers: Design, simulation, test
Author :
Jagtap, V.S. ; Kreisler, Alain J. ; Redon, M. ; Klisnick, G. ; Degardin, Annick F.
Author_Institution :
LGEP, UPMC Univ. Paris 06, Paris, France
Abstract :
Reflection phase gratings offer great potential as local oscillator beam multiplexers in THz imaging heterodyne receivers. Using the Lagrange´s multipliers method, we have optimized the phase profiles to achieve high diffraction efficiencies for three, four and five beam linear multiplexers. Experimental results at 2.5 THz are reported for a three-beam bulk aluminum multiplexing device.
Keywords :
diffraction gratings; heterodyne detection; multiplexing equipment; receivers; terahertz wave imaging; Fourier gratings; THz imaging heterodyne receivers; THz multiplexers; frequency 2.5 THz; local oscillator beam multiplexers; reflection phase gratings; Aluminum; Diffraction; Gratings; Laser beams; Multiplexing; Power measurement; Reflection;
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on
Conference_Location :
Tucson, AZ
DOI :
10.1109/IRMMW-THz.2014.6956422
