Accurate Complex Refractive Index with Standard Deviation of ZnTe Measured by Terahertz Time Domain Spectroscopy

作者：Tripathi Saroj R^*; Aoki Makoto; Takeda Masanori; Asahi Toshiaki; Hosako Iwao; Hiromoto Norihisa

来源：Japanese Journal of Applied Physics, 2013, 52(4): 042401.

DOI：10.7567/JJAP.52.042401

Accurate complex refractive index of ZnTe crystal in terahertz spectral region from 0.2 to 3.5 THz is obtained by measuring three samples with different thickness using transmission terahertz time-domain spectroscopy. Each sample is measured a number of times and the mean and standard deviation (SD) of the complex refractive index are calculated to quantify the random errors in the measurement. The ratios of SD to mean of the real and imaginary parts of the refractive index are approximately 1.0 x 10(-4) and 1.2 x 10(-2) at 1 THz respectively. The absorption coefficient of our ZnTe sample is found to be comparable with or smaller than the values reported in previous literatures.

• 出版日期2013-4