Terahertz frequency optical constants of montmorillonite

Author

Wilke, Ingrid ; Ramanathan, Vignesh ; LaChance, Julienne ; Aldersley, Michael F. ; Joshi, P.C. ; Ferris, James P.

Author_Institution

Rensselaer Polytech. Inst., Troy, NY, USA

fYear

2013

fDate

1-6 Sept. 2013

Firstpage

1

Lastpage

2

Abstract

The real and imaginary parts of the complex index of refraction of montmorillonite between 0.2 THz and 1.4 THz at room temperature are reported. The optical properties of montmorillonite in this frequency range were experimentally determined using time-domain THz spectroscopy. Distinct frequency dependencies of the index of refraction and the extinction coefficient are not observed within the uncertainties of the measurements. The index of refraction of montmorillonite is modeled using effective medium theory.

Keywords

clay; extinction coefficients; refractive index; terahertz wave spectra; clay mineral; effective medium theory; extinction coefficient; frequency 0.2 THz to 1.4 THz; montmorillonite; optical constants; optical properties; refraction index; temperature 293 K to 298 K; terahertz frequency; time-domain terahertz spectroscopy; Frequency measurement; Indexes; Laser excitation; Measurement by laser beam; Minerals; Optical refraction; Spectroscopy; absorption; clay minerals; montmorillonite; optical constants; terahertz spectroscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2013 38th International Conference on

Conference_Location

Mainz

Type

conf

DOI

10.1109/IRMMW-THz.2013.6665581

Filename

6665581