3 papers
physics.optics2026
Ultrawide Bandwidth Optomechanical Magnetometry Using Flux Concentration
Benjamin J. Carey, Nathaniel Bawden, Fernando Gottardo +4
Low-frequency magnetic fields carry vital information for neuroscience, navigation, and Earth science. However, they are generally weak, making it challenging to measure them with…
physics.optics2025
Silicon-photonic optomechanical magnetometer
Fernando Gottardo, Benjamin J. Carey, Nathaniel Bawden +7
Optomechanical sensors enable exquisitely sensitive force measurements, with emerging applications across quantum technologies, standards, fundamental science, and engineering. Mag…
physics.app-ph2023
Quantitative Profilometric Measurement of Magnetostriction in Thin-Films
Hamish Greenall, Benjamin J. Carey, Douglas Bulla +5
A DC non-contact method for measuring the magnetostrictive strain in thin-films is demonstrated, achieving a state-of-the-art sensitivity of 0.1 ppm. In this method, an optical pro…