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Field imaging near to the surface of terahertz reflective optics using a vector network analyzer.

Hajji, Maryam and Hammler, Jonathan and Zeze, Dagou and Balocco, Claudio and Gallant, Andrew J. (2017) 'Field imaging near to the surface of terahertz reflective optics using a vector network analyzer.', Applied optics., 56 (31). pp. 8746-8750.


A vector network analyzer-based quasi-optical measurement system that is suitable for mapping electric field intensity and phase near to the surface of terahertz reflective optics is presented. The system uses a fixed five parabolic mirror and transmitter/receiver head arrangement that has the benefit of requiring only the sample to be swept during measurement. The system has been tested with a micromilled aluminum zone plate reflector used as an exemplar structure. The measured focal point of the zone plate reflector, at its designed frequency of 1 THz, is shown to correspond well to both finite difference time-domain simulations and analytical theory.

Item Type:Article
Full text:(AM) Accepted Manuscript
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Publisher statement:© 2017 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.
Date accepted:26 September 2017
Date deposited:06 November 2017
Date of first online publication:30 October 2017
Date first made open access:30 October 2018

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