All-optical highly sensitive akinetic sensor for ultrasound detection and photoacoustic imaging.
Preisser Stefan, Rohringer Wolfgang, Liu Mengyang, +4 more·Biomedical optics express
A novel all-optical akinetic ultrasound sensor, consisting of a rigid, fiber-coupled Fabry-Pérot etalon with a transparent central opening is presented. The sensing principle relies exclusively on the detection of pressure-induced changes of the refractive index in the fluid filling the Fabry-Pérot cavity. Th…