Research

Rapid and high-resolution hyperspectral imaging is a powerful optical method that is used in fundamental science for studying materials’ optical properties on a single particle level. The imaging methods are also widely used outside the research laboratories for practical applications such as identifying cancer cells, detecting toxic materials and LIDAR. However currently available imaging methods have significant limitations. They require long acquisition times and they face challenges to differentiate the target species from the cluttered background. In addition, the measured linewidth suffer from inhomogeneous broadening. The Lomsadze group is developing a novel imaging method that has the potential to solve these problems.  This new method is based on tri-comb spectroscopy TCS, a revolutionary approach to laser spectroscopy, that was recently invented by the PI. TCS is a rapid, high-resolution and background free optical method that enables the measurement of homogenous linewidth in inhomogenously broadened systems.  It also provides information whether the measured resonances belong to the same or different analytes in a mixture, which is critical for imaging applications. 

The Lomsadze group is also working on using this novel approach to study non-linear optical properties, dynamics, many-body-interactions and localization effects of atomic/molecular systems and semiconductor nanostructures.