Murphy, J.Anthony and O'Sullivan, Créidhe and Trappe, Neil and Lanigan, William and Colgan, R. and Withington, Stafford (1999) Modal analysis of the quasi-optical performance of phase gratings. International journal of infrared and millimeter waves, 20 (8). pp. 1469-1486. ISSN 0195-9271

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Abstract

This paper is concerned with the analysis of phase gratings as passive quasi-optical multiplexing devices. One important application of such components is in the local oscillator injection chain of heterodyne array receivers. Gaussian beam mode analysis can be applied as a powerful tool when modelling the optical performance of phase gratings in a real submillimeter system of finite throughput and bandwidth. In our experimental investigations we have concentrated on the Dammann Grating (DG) which is a binary optical component and thus straightforward to manufacture. A number of quartz gratings were fabricated and carefully tested to evaluate the practical limitations of such quasi-optical components. Because of its convenient refractive index quartz can be used to produce gratings with very low reflection losses. The results presented confirm DGs to be particularly suitable multiplexers for sparse arrays of finite bandwidth.

Item Type:	Article
Additional Information:	Cite this article as: Murphy, J.A., O'Sullivan, C., Trappe, N. et al. International Journal of Infrared and Millimeter Waves (1999) 20: 1469. https://doi.org/10.1023/A:1021752502434
Keywords:	Submillimetre; Dammann grating; quasi-optical; modal analysis; Refractive Index; Gaussian Beam; Optical Component; Reflection Loss; Local Oscillator;
Academic Unit:	Faculty of Science and Engineering > Experimental Physics
Item ID:	61
Identification Number:	https://doi.org/10.1023/A:1021752502434
Depositing User:	Suzanne Redmond Maloco
Date Deposited:	23 Sep 2008
Journal or Publication Title:	International journal of infrared and millimeter waves
Publisher:	Plenum Publishing Company
Refereed:	Yes
URI:	https://link.springer.com/
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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