Physics colloquium: “Quantum-Classical Single Pixel Spatial Frequency Fusion Imaging”

Randy Bartels

Colorado State University, Electrical & Computer Engineering

Abstract: Optical imaging is a powerful tool that has found widespread use in vast areas of science and industry. Fluorescent imaging is an indispensable component of many biological investigations, owing to the ability to track specific molecules. Coherent nonlinear optical imaging, based on inelastic nonlinear light scattering driven by intense laser fields, provides contrast mechanisms that provide information not accessible by other optical imaging methods. Nonlinear optical imaging is particularly useful in complex environments that suffer from significant optical scattering and absorption where conventional camera-based methods fail. Optical imaging with single pixel detection enables imaging detailed structures in specimens by scanning a point focus of light in three dimensions. I will discuss recent advances in multiplexed imaging where dynamically structured illumination light is able to extract significantly more spectroscopic and spatial information from a specimen. Application of dynamic light structuring to classical super resolution microscopy, hyperspectral imaging, and Raman microscopy, a new form of coherent nonlinear tomographic imaging will be reviewed. The talk will focus on the exploitation of quantum correlations for improved super resolution imaging and computational fusion imaging.

Bio: Randy A. Bartels is a Professor of Electrical and Computer Engineering and the School of Biomedical Engineering at Colorado State University (CSU). Prof. Bartels has been awarded the Adolph Lomb Medal from the Optical Society of America, a National Science Foundation CAREER award, a Sloan Research Fellowship in physics, an Office of Naval Research Young Investigator Award, a Beckman Young Investigator Award, an IEEE-LEOS (now Photonics Society) Young Investigator Award, a Kavli Fellow of the National Academy of Sciences, and a Presidential Early Career Award for Science and Engineering (PECASE). His research involves the development of novel spectroscopy and microscopy techniques and ultrafast fiber lasers for use in these applications. He is a Fellow of the Optical Society of America and of the American Physical Society (APS). He serves on the Editorial Board of Applied Physics Letters, Photonics and Frontiers Optics and Photonics Journal and is an editor for Optics Communications and for Science Advances.

All lectures in CoorsTek 140 unless otherwise noted