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POlarisation Resolved Reflectance in Pulsed-fields

Research project selected under the 2023 call for proposals

Principal Investigator : Duncan MAUDE

Involved Teams :

  • LNCMI / Quantum Electronics

Type of project : Disruptive Project

Date (start/end) : 2023 – 2025

Modified reflectivity probe for measurements in pulsed magnetic fields up to 90T. A fibre bundle is used rather than a single fibre. The centre fibre is used for excitation, and the outer ring is is used for collection. The polarizer will be place in the detection path. A disc shaped polariser will be placed on the fibre bundle with a 100um hole in the centre to allow unpolarised excitation. This setup is essential to measure absorption (in reflectivity configuration) of samples which are too thick for standard transmission measurements. This system will be used to measure single crystals of metal-halide perovskites.

The goal of this project is to develop a new and unique experimental technique which will allow to measure polarization resolved absorption in the reflectivity configuration at extremely high magnetic field up to 90T. This approach is based on preparing a completely new design of the probe based on a home-made fiber bundle with one much longer fiber combined with polarization optics with a small central hole. We will apply this technique to the measurements of magneto transmission of novel 2D organic inorganic halide perovskite semiconductor, which are in a single crystal form. These measurements will allow to access electronic properties of high quality single crystal samples, where transmission configuration is not possible.