Polarization-sensitive terahertz time-domain spectroscopy system without mechanical moving parts

Abstract

We report on the measurement of terahertz electric-field vector waveforms by using a system that contains no mechanical moving parts. It is known that two phase-locked femtosecond lasers with different repetition rates can be used to perform time-domain spectroscopy without using a mechanical delay stage. Furthermore, an electro-optic modulator can be used to perform polarization measurements without rotating any polarizers or waveplates. We experimentally demonstrate the combination of these two methods and explain the analysis of data obtained by such a system. Such a system provides a robust platform that can promote the usage of polarization-sensitive terahertz time-domain spectroscopy in basic science and practical applications. For the experimental demonstration, we alter the polarization of a terahertz wave by a polarizer.

arXiv comment28 pages, 5 figures

References in corpus (6)

• Polarisation-sensitive terahertz detection by multicontact photoconductive receivers
• Polarization modulation time-domain terahertz polarimetry
• Optical Hall Effect in the Integer Quantum Hall Regime
• Terahertz Kerr and Reflectivity Measurements on the Topological Insulator Bi2Se3
• Collective Antenna Effects in the Terahertz and Infrared Response of Highly Aligned Carbon Nanotube Arrays
• Simultaneous measurement of circular dichroism and Faraday rotation at terahertz frequencies using heterodyne detection