4 papers
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…
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…
Silicon Double-Disk Optomechanical Resonators from Wafer-Scale Double-Layered Silicon-on-Insulator
Amy Navarathna, Benjamin J. Carey, James S. Bennett +2
Whispering gallery mode (WGM) optomechanical resonators are a promising technology for the simultaneous control and measurement of optical and mechanical degrees of freedom at the…
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…