ABSTRACT: I will discuss my research interests in nonlinear integrated devices and super-microscopy. Recently, ultrafast and nonlinear integrated devices have captured interest for frequency metrology, sensing, and imaging. An excellent platform for nonlinear optical devices is offered by chalcogenide glasses, with high nonlinearities, long wavelength transparencies, flexible substrate choice, and low nonlinear absorption. Progress on integrated optical devices for the near, mid, and long-wavelength infrared is presented, including nonlinear optical characterization. Specifically, I will present a new method for characterizing the linear and nonlinear properties of microresonators, supercontinuum generation and annealing studies in the material as well as an investigation of photosensitivity as a method to control the device properties. Methods to enhance the nonlinearity, which result in enhanced third harmonic generation, will also be presented. 

BIO: Juliet Gopinath is an Associate Professor of Electrical, Computer and Energy Engineering at the University of Colorado Boulder. She received her B.S. degree in Electrical Engineering from the University of Minnesota and her M.S. and Ph.D. degrees at MIT. She was a member of technical staff at MIT Lincoln Laboratory from 2005 to 2009. Since then, for the past nine years, she has led a research group at the University of Colorado Boulder. Her current research interests include ultrafast lasers, nonlinear optics, mid-infrared materials, spectroscopy, orbital angular momentum and adaptive optical devices. She is the recipient of an R&D 100 Award (2012), an NSF CAREER Award (2016) and the University of Colorado Boulder Provost’s Achievement Award (2016). She has published 65 peer-reviewed journal articles and over 76 conference presentations and served as an Associate Editor for the IEEE Photonics Society Journal (2011-2017), a member of the IEEE Photonics Society Publications Council (2018), the Associate Director for Cubit (2019), and is currently an Associate Editor for Optica.