Murphy, J.Anthony and Withington, S. and van de Stadt, H. (1995) Dammann Gratings for Local Oscillator Beam Multiplexing. In: Multi-Feed Systems for Radio Telescopes. Workshop held in Tucson, Arizona, May 16-18, 1994. Astronomical Society of the Pacific Conference Series (75). Astronomical Society of the Pacific, pp. 238-244. ISBN 0937707945

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Abstract

In submillimetre-wave heterodyne imaging systems, optical coupling provides the most efficient way of combining local oscillator power with the array of signals from the telescope. For systems limited to one local oscillator source an ideal optical-coupling scheme would produce an array of appropriately scaled images of the local oscillator feed at the detectors without any loss in power. One candidate for a beam multiplexing system is the combination of an interferometric couple with a type of binary phase grating known as a Dammann grating. In this paper, we consider in some detail the feasibility of such a system.

Item Type:	Book Section
Additional Information:	Cite as: Murphy, John & Withington, Stafford & Stadt, H.. (1995). Dammann Gratings for Local Oscillator Beam Multiplexing. 75. 238.
Keywords:	Dammann Gratings; Local Oscillator; Beam Multiplexing;
Academic Unit:	Faculty of Science and Engineering > Experimental Physics
Item ID:	14047
Depositing User:	Dr. Anthony Murphy
Date Deposited:	19 Feb 2021 16:21
Publisher:	Astronomical Society of the Pacific
Refereed:	Yes
URI:
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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