Single Pixel Imaging at MHz Rates via Cyclic Hadamard Patterns
In this project we focused on speeding up single pixel imaging systems and until now managed to achieve modulation rates of 2.4 MHz. This is two orders of magnitudes above the currently available modulation rates! Also, we developed algorithms for correcting motion errors that occur when moving faster than the imaging rate, this way enabling … Continue reading "Single Pixel Imaging at MHz Rates via Cyclic Hadamard Patterns"Read More »
Detection of ultrasound via optical interferometry
The detection of ultrasound is conventionally performed by using piezoelectric transducers. Despite the ubiquity of this approach, it suffers from several drawbacks that limit its application. In particular, in the field of optoacoustic imaging, the opacity of piezoelectric materials in use puts constraints on possible illumination patterns. In addition, piezoelectric transducers generally lose sensitivity upon … Continue reading "Detection of ultrasound via optical interferometry"Read More »
Optoacoustic tomography: Systems and theory
Optoacoustic tomography (OAT), also known as photoacoustic tomography, is a hybrid imaging modality that enables the visualization of optical contrast with high resolution at tissue depths in which light propagation is diffusive. In OAT, high-energy laser pulses are sent into the tissue, leading to local energy deposition and (almost) instantaneous thermal expansion of optically absorbing … Continue reading "Optoacoustic tomography: Systems and theory"Read More »