5 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…
Precision optomechanical accelerometer via hybrid test mass integration
Nathaniel Bawden, Benjamin J. Carey, Poh-Meng Yeo +7
Accelerometers offer motion sensing capabilities across a wide range of areas, enabling navigational awareness in consumer goods and defense applications, and playing a key role in…
Fibre-coupled photonic crystal hydrophone
Lauren R. McQueen, Nathaniel Bawden, Benjamin J. Carey +3
Many applications, including medical diagnostics, sonar and navigation rely on the detection of acoustic waves. Photonic hydrophones demonstrate comparable sensitivity to piezoelec…
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…