Sri-Rajasekhar Kothapalli

Metalens-transparent ultrasound transducer module for extended depth photoacoustic microscopy

Optical-resolution photoacoustic microscopy (ORPAM) provides label-free optical-absorption contrast at millimeter-scale tissue depths with micrometer-scale lateral resolution. However, its volumetric coverage is limited by the short depth of focus of conventional optical lenses, whereas system miniaturization is constr...