Optical-pump–terahertz-probe spectroscopy in high magnetic fields with kHz single-shot detection
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033005_1_5.0179123.pdf
Description
Published version
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7.85 MB
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Author(s)
Dastrup, Blake S
Miedaner, Peter R
Zhang, Zhuquan
Nelson, Keith A
Date Issued
March 12, 2024
Journal
Review of Scientific Instruments
Publisher
AIP Publishing
Citation
Blake S. Dastrup, Peter R. Miedaner, Zhuquan Zhang, Keith A. Nelson; Optical-pump–terahertz-probe spectroscopy in high magnetic fields with kHz single-shot detection. Rev. Sci. Instrum. 1 March 2024; 95 (3): 033005.
Version
Final published version
Abstract
We demonstrate optical pump–THz probe (OPTP) spectroscopy with a variable external magnetic field (0–9 T), in which the time-dependent THz signal is measured by echelon-based single-shot detection at a repetition rate of 1 kHz. The method reduces data acquisition times by more than an order of magnitude compared to conventional electro-optic sampling using a scanning delay stage. The approach illustrates the wide applicability of the single-shot measurement approach to non-equilibrium systems that are studied through OPTP spectroscopy, especially in cases where parameters such as magnetic field strength (B) or other experimental parameters are varied. We demonstrate the capabilities of our measurement by performing cyclotron resonance experiments in bulk silicon, where we observe B-field-dependent carrier relaxation and distinct relaxation rates for different carrier types. We use a pair of economical linear array detectors to measure 500 time points on each shot, offering an equivalent performance to camera-based detection with possibilities for higher repetition rates.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
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DOI of Published Version
https://doi.org/10.1063/5.0179123
