Field imaging near to the surface of terahertz reflective optics using a vector network analyzer.
Appl Opt
; 56(31): 8746-8750, 2017 Nov 01.
Article
en En
| MEDLINE
| ID: mdl-29091697
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.
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01-internacional
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MEDLINE
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En
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Appl Opt
Año:
2017
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Article
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Estados Unidos