The THz spectra and analysis of Bi4Ge3O12 crystal

Author

Wang, Yali ; Hou, Bihui ; Wang, Haiyan ; Zhao, Guozhong ; Yang, Bingxin

Author_Institution

Coll. of Mater. Sci. & Optoelectron. Technol., Grad. Univ. of Chinese Acad. of Sci., Beijing, China

fYear

2010

fDate

5-10 Sept. 2010

Firstpage

1

Lastpage

2

Abstract

THz time domain spectra of Bi₄Ge₃O₁₂ (BGO) crystal were measured. The refractive index and power absorption function and optical dielectric function were obtained. The time domain spectrum shows resonance characteristic. There was one strong absorption band in the range of 1.5-2.3 THz. And the refractive index exist abnormal dispersion in the range. The time domain spectra characteristic of photon-phonon interaction were presented and it show that the phonon polariton arises in BGO crystal.

Keywords

bismuth compounds; dielectric function; optical dispersion; phonons; polaritons; refractive index; terahertz wave spectra; Bi₄Ge₃O₁₂; THz time domain spectra; abnormal dispersion; frequency 1.5 THz to 2.3 THz; optical dielectric function; phonon polariton; photon-phonon interaction; power absorption function; refractive index; resonance characteristics; Absorption; Biomedical optical imaging; Crystals; Optical refraction; Optical variables control; Photonics; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared Millimeter and Terahertz Waves (IRMMW-THz), 2010 35th International Conference on

Conference_Location

Rome

Print_ISBN

978-1-4244-6655-9

Type

conf

DOI

10.1109/ICIMW.2010.5612465

Filename

5612465