Fourier phase grating for THz multi-beam local oscillators

Conference paper (2015)
Department
QN/Quantum Nanoscience (AS) (TU Delft)
Copyright: © 2015 The Author(s)
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Published Date

16-03-2015

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Source:

ISSTT 2015: Proceedings of the 26th International Symposium on Space Terahertz Technology, Cambridge, USA, 16-18 March 2015

Faculty

Applied Sciences

Department

QN/Quantum Nanoscience

Abstract

A Fourier phase grating mirror will be applied to split a single, coherent terahertz source beam into multi-beams, which are spatially distributed as required for the local oscillator in an array receiver. We report on the simulation, design and fabrication of a Fourier phase grating at 1.25 THz for generating 2×2 beams, and the measurements at 1.39 THz as a proof of concept study. We find that the characteristics of the measured diffraction beams are in good agreement with the model. In addition, we present the simulation and design of a grating for 4×4 beams as required for the GUSSTO’s 4.7 THz local oscillator.

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