Polarization terahertz spectroscopy application to theophylline anhydrite single crystal for vibrational mode assignment

Author

Sasaki, T. ; Kambara, Ohki ; Sakamoto, Takanori ; Nishizawa, Jun-ichi

Author_Institution

Res. Inst. of Electron., Shizuoka Univ., Hamamatsu, Japan

fYear

2014

fDate

14-19 Sept. 2014

Firstpage

1

Lastpage

2

Abstract

Theophylline anhydrite single crystal thin enough for wide range THz transmittance spectroscopy could be grown by Temperature Difference Method in aqueous solution. Polarization dependent THz transmittance spectra of the crystal at 70 K were obtained by using a GaP CW THz spectrometer. Absorption lines existing at close frequency could be resolved each other successfully. Assignments of absorption peaks were performed by comparing with the results of measurement and DFT calculation in periodic boundary condition.

Keywords

III-V semiconductors; gallium compounds; organic compounds; terahertz spectroscopy; terahertz wave spectra; vibrational modes; CW THz spectrometer; GaP; absorption lines; periodic boundary condition; polarization terahertz spectroscopy application; temperature 70 K; temperature difference method; theophylline anhydrite single crystal; vibrational mode assignment; Abstracts;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on

Conference_Location

Tucson, AZ

Type

conf

DOI

10.1109/IRMMW-THz.2014.6956361

Filename

6956361