Coherent two-dimensional Fourier transform spectroscopy using a 25 Tesla resistive magnet

Jagannath Paul, Christopher E. Stevens, Ryan P. Smith, Prasenjit Dey, Varun Mapara, Dimitry Semenov, Steven A. McGill, Robert A. Kaindl, David J. Hilton, Denis Karaiskaj

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

We performed nonlinear optical two-dimensional Fourier transform spectroscopy measurements using an optical resistive high-field magnet on GaAs quantum wells. Magnetic fields up to 25 T can be achieved using the split helix resistive magnet. Two-dimensional spectroscopy measurements based on the coherent four-wave mixing signal require phase stability. Therefore, these measurements are difficult to perform in environments prone to mechanical vibrations. Large resistive magnets use extensive quantities of cooling water, which causes mechanical vibrations, making two-dimensional Fourier transform spectroscopy very challenging. Here, we report on the strategies we used to overcome these challenges and maintain the required phase-stability throughout the measurement. A self-contained portable platform was used to set up the experiments within the time frame provided by a user facility. Furthermore, this platform was floated above the optical table in order to isolate it from vibrations originating from the resistive magnet. Finally, we present two-dimensional Fourier transform spectra obtained from GaAs quantum wells at magnetic fields up to 25 T and demonstrate the utility of this technique in providing important details, which are obscured in one dimensional spectroscopy.

Original languageEnglish (US)
Article number063901
JournalReview of Scientific Instruments
Volume90
Issue number6
DOIs
StatePublished - Jun 1 2019

ASJC Scopus subject areas

  • Instrumentation

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