A researcher whose team developed an optical method for measuring magnetostriction in pulsed magnetic fields. A fiber Bragg grating attached to a small specimen changes its reflected wavelength as the specimen strains. Fast optical readout tracks tiny length changes during the short field pulse, including at cryogenic temperatures. The method connects mechanical deformation with the magnetic response of a material without requiring electrical strain readout beside the specimen.[ref]
High resolution magnetostriction measurements in pulsed magnetic fields using Fibre Bragg Gratings by Ramzy Daou and others. Abstract and apparatus description: fiber-grating strain sensing, pulsed-field bandwidth and low-temperature operation
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