Toward quasi-DC conductivity of warm dense matter measured by single-shot terahertz spectroscopy

B K Ofori-Okai; A Descamps; J Lu; L E Seipp; A Weinmann; S H Glenzer; Z Chen

doi:10.1063/1.5038944

Toward quasi-DC conductivity of warm dense matter measured by single-shot terahertz spectroscopy

Rev Sci Instrum. 2018 Oct;89(10):10D109. doi: 10.1063/1.5038944.

Authors

B K Ofori-Okai¹, A Descamps¹, J Lu¹, L E Seipp¹, A Weinmann¹, S H Glenzer¹, Z Chen¹

Affiliation

¹ SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA.

PMID: 30399773
DOI: 10.1063/1.5038944

Abstract

We present an experimental setup capable of measuring the near DC conductivity of laser generated warm dense matter using single-shot terahertz time-domain spectroscopy. The setup uses a reflective echelon and balanced detection to record THz waveforms with a minimum detectable signal of 0.2% in a single laser pulse. We describe details of the experimental setup and the data analysis procedure and present single-shot terahertz transmission data on aluminum that has been laser heated to an electron temperature of 0.5 eV.