[Characterizations of InP in terahertz region].
Terahertz time-domain spectroscopy (THz-TDS), which directly measures the THz wave's temporal electric field, can give the amplitude and phase of the THz wave pulse simultaneously. THz-TDS is attracting more attention among scientists. InP with short carrier average collision time and low effective mass is growing up as one of the best photoconductive materials for emitting and detecting THz waves. An n-type InP of 0.35 omega x cm was characterized over the range from 0.2 to 4 THz at room temperature in the present paper with THz time-domain spectroscopy, which was placed in a closed box purged with dry nitrogen gas. Some THz optical properties, such as complex refractive index, dielectric constant, and conductivity, were extracted, based on more exact iterative method with new initial function. Drude model was also applied for simulation, which fitted well with the experimental results. Finally, the carrier average collision time, density and mobility of the InP were also characterized.
Research Institute of Superconductor Electronics, Nanjing University, Nanjing 210093, China. zch312@gmail.com
Cai-Hong
CH
Zhang
Yuan-Yuan
YY
Wang
Jin-Long
JL
Ma
Biao-Bing
BB
Jin
Wei-Wei
WW
Xu
Lin
L
Kang
Jian
J
Chen
Pei-Heng
PH
Wu