Colloquium: Jie Qiao

    Thursday, November 3, 2016 - 3:30pm - 5:00pm
    Meinel 307

    Ultrafast Lasers for Photonics Fabrication and Additive Manufacturing, Optical Differentiation Wavefront Sensing, and Coherent Phasing and Deformable Gratings


    The research on next-generation, laser-based manufacturing technologies is highly interdisciplinary, intersecting novel ultrafast laser technology, systems, metrology, precision controls, materials, the associated laser-material interaction processes.  The first part of the talk presents novel systems and physical processes using ultrafast lasers for the fabrication and integration of photonic devices and optical components, and the polishing of additively manufactured parts, potentially utilizing the below wavefront-sensing and deformable-optics techniques. The second part of the talk presents a new optical differentiation wavefront sensing technique based on measurements of wavefront slopes obtained by far-field spatial modulation with a binary pixelated filter inducing a linear amplitude transmission. This sensor is expected to offer phase measurement with higher spatial resolution, higher dynamic range and higher signal-to-noise ratio for measuring laser beams and manufacturing process. The last part of the talk focuses on coherent phasing of large-aperture grating and the realization of a 1.5-meter scale tiled-grating compressor, the design and optimization of deformable gratings for generating kilojoule, petawatt laser pulses.

    Speaker Bio(s): 

    Dr. Jie Qiao is currently an Associate Professor in the Carlson Center for Imaging Science at Rochester Institute of Technology. She leads the Advanced Optical Fabrication, Instrumentation & Metrology Laboratory where her team works on ultrafast-lasers for advanced photonics / optics fabrication and additive manufacturing, optical metrology, and instrumentation. Prior to joining RIT, she was a laser system scientist at the DOE-funded Laboratory for Laser Energetics, University of Rochester from 2005 to 2013. She has conceived an interferometric grating-tiling technique and led the team that demonstrated the world’s first 1.5-meter tiled-grating pulse compressor. Dr. Qiao has worked on various innovative photonics devices, optical imaging and metrology systems, for two photonic startups and one optics company. Dr. Qiao earned her Ph.D. in Electrical and Computer Engineering from the University of Texas at Austin in 2001 and her M.S. in Precision Instruments and Fine Mechanics from Tsinghua University in 1997. She has an M.B.A in entrepreneurship, strategy, finance and marketing from the Simon Graduate School of Business, University of Rochester. Dr. Qiao founded Women in Science, Technology, Engineering and Entrepreneurship (WiSTEE) Connect in 2013, for which she is serving as the Chair.