Title :
Phase gratings for the sub-millimetre band
Author :
May, R. ; Murphy, J.A. ; Lanigan, W.
Author_Institution :
Dept. of Exp. Phys., Nat. Univ. of Ireland, Maynooth, Ireland
fDate :
27 Sept.-1 Oct. 2004
Abstract :
This presentation is concerned with the development of phase gratings for use at terahertz frequencies (sub-mm wavelengths). Design, fabrication and testing of two grating types (Dammann and Fourier) are discussed. Modelling using quasi-optical techniques is outlined and the implementation of a suitable algorithm (Gerchberg-Saxton) to find solutions for the phase-retrieval problem discussed.
Keywords :
Fraunhofer diffraction; Fresnel diffraction; diffraction gratings; diffractive optical elements; optical design techniques; optical testing; Dammann grating; Fourier grating; Gerchberg-Saxton algorithm; optical design; optical fabrication; optical testing; phase gratings; phase retrieval problem; quasioptical techniques; submillimetre bands; submm wavelength applications; terahertz frequency applications; Diffraction gratings; Frequency; Optical devices; Optical diffraction; Optical imaging; Optical mixing; Optical receivers; Phase modulation; Phased arrays; Sensor arrays;
Conference_Titel :
Infrared and Millimeter Waves, 2004 and 12th International Conference on Terahertz Electronics, 2004. Conference Digest of the 2004 Joint 29th International Conference on
Print_ISBN :
0-7803-8490-3
DOI :
10.1109/ICIMW.2004.1422102
