Mid Infrared Label Free Interferometric Detectorless Imaging Photonic Circuit

We discuss and present preliminary experimental evidence for three novel add-on functionalities that can make optical feedback imaging a truly small footprint and a label-free bioimaging technology. The first is the integration of optical feedback interferometry in silicon photonic chips. We delineate the essential components for the realization of a scanless imaging system within a silicon photonic chip and demonstrate laser modulation via optical feedback from the radiation emitted after traversing an integrated optical component on a silicon platform. The second is single-pixel compressed sensing. Here, we report on the demonstration of scanless optical feedback imaging in free space by spatially modulated illumination of the target. The third functionality is the chemical sensitivity. Here, we report the identification of several pigments by selective spectral discrimination at three different wavelengths.