Single-pixel optical camera for video rate ultrasonic imaging

A coherent-light single-pixel camera was used to interrogate a Fabry–Perot polymer film ultrasound sensor, thereby serially encoding a time-varying 2D ultrasonic field onto a single optical channel. By facilitating compressive sensing, this device enabled video rate imaging of ultrasound fields. In experimental demonstrations, this compressed sensing capability was exploited to reduce motion blur and capture dynamic features in the data. This relatively simple and inexpensive proof-of-principle device offers a route to high pixel count, high frame rate, broadband 2D ultrasound field mapping.