Dielectric properties of GaAs in terahertz wave

摘要：

The terahertz dielectric properties of GaAs were tested in the frequency range extending from 0.23 THz to 0.375 THz by using backward-wave oscillator (BWO). The terahertz refractive indices, the absorption spectra and the dielectric functions of various resistivity GaAs were measured and compared. The experimental results indicate that the absorption coefficient of the GaAs is decreased with the frequency increasing and its least absorption coefficient equals 3.87×10-4 cm-1. Our results demonstrate that the applicability of the backward-wave oscillator THz absorption spectroscopy to GaAs characteristic analysis by calculating the absorption spectra. This work establishes the basic spectra data for GaAs is very significative to design the high efficiency terahertz wave antenna.

关键词： backward-wave oscillator (BWO) GaAs absorption coefficient

作者: Li Jiusheng Zhao Xiaoli Li Jianrui

作者单位: School of Information Engineering,China Jiliang University,Hangzhou 310018,China

会议类型: 国际会议

会议名称: 2008亚太光通信会议(Asia-Pacific Optical Communications 2008)

会议地点: 杭州

会议语种:英文

在线出版日期: 2008-10-26（万方平台首次上网日期，不代表论文的发表时间）