Rotational Cuvette Measurements for Refractive Index Testing using a THz Vector Network Analyser

Rhiannon Lees,Andreas Klein,Michael Cooke,Claudio Balocco,Andrew J. Gallant

2019 44TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)（2019）

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摘要

This paper describes a new method for measuring the refractive index of liquids using a THz vector network analyser. The method relies on the change of optical path length in a rotating cuvette containing the liquid under test, providing a self-referencing system. The measured phase, as a function of the cuvette angular displacement, is used to calculate the refractive index of hexane, undecane and hexadecane, in the frequency range 0.8-1.05 THz.

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关键词

refractive index testing,rotational cuvette measurements,optical path length,cuvette angular displacement,terahertz vector network analyser,liquid under test,self-referencing system,hexane,undecane,hexadecane,frequency 0.8 THz to 1.05 THz

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