Single-shot terahertz time-domain spectroscopy in pulsed high magnetic fields

Authors:
Open Access
Publisher website
Google Scholar
Abstract
We have developed a single-shot terahertz time-domain spectrometer to perform optical-pump/terahertz-probe experiments in pulsed, high magnetic fields up to 30 T. The single-shot detection scheme for measuring a terahertz waveform incorporates a reflective echelon to create time-delayed beamlets across the intensity profile of the optical gate beam before it spatially and temporally overlaps with the terahertz radiation in a ZnTe detection crystal. After imaging the gate beam onto a camera, we can retrieve the terahertz time-domain waveform by analyzing the resulting image. To demonstrate the utility of our technique, we measured cyclotron resonance absorption of optically excited carriers in the terahertz frequency range in intrinsic silicon at high magnetic fields, with results that agree well with published values.
Funding Information
  • Directorate for Mathematical and Physical Sciences (MPS) (DMR-1310138)
  • Japan Society for the Promotion of Science (JSPS) (KAKENHI (Nos. 15K13378 and 16H04001))

This publication has 30 references indexed in Scilit: