title: A matter of symmetry: terahertz polarization detection properties of a multi-contact photoconductive antenna evaluated by a response matrix analysis.
abstract: While terahertz time domain spectroscopy (THz-TDS) is a well-established technique, polarization sensitive measurements are challenging due to the need of broadband polarization devices. Here, we characterize our recently introduced multi-contact photoconductive detector antenna with a response matrix analysis. We show that the lead lines attached to electrodes reduce the antenna symmetry and thereby influence the properties of the response matrices. With a wire grid polarizer, we simulate a sample influencing the polarization angle and the intensity of the incident THz pulse. Evaluating the measurements with the response matrix analysis, our results show a well agreement of the adjusted and measured polarization angles and intensities over a frequency range from 0.25 to 0.8 THz.
authors.forename: Gudrun
authors.initials: G
authors.lastname: Niehues
authors.forename: Stefan
authors.initials: S
authors.lastname: Funkner
authors.forename: Dmitry S
authors.initials: DS
authors.lastname: Bulgarevich
authors.forename: Satoshi
authors.initials: S
authors.lastname: Tsuzuki
authors.forename: Takashi
authors.initials: T
authors.lastname: Furuya
authors.forename: Koji
authors.initials: K
authors.lastname: Yamamoto
authors.forename: Mitsuharu
authors.initials: M
authors.lastname: Shiwa
authors.forename: Masahiko
authors.initials: M
authors.lastname: Tani