Colloquium: Hooman Mohseni

    Thursday, April 30, 2015 - 3:30pm - 5:00pm
    Meinel 307 No Video available

    "Photon Detectors, Their Impact on Our Lives and New Breakthroughs That Might Change the Future"


    Photon detectors are now at the heart of many modern scientific, medical, industrial and security systems. These detectors, whether single-element or imaging arrays, are often the performance bottleneck in such systems. In fact, if photon detectors could perform at their theoretical limit of performance, we could make tremendous progress in many areas including direct imaging of exoplanets and scalable quantum computers.

    Mohseni will discuss the historic view of quantum and thermodynamic limit of sensitivity and describe recent progresses in making novel infrared imagers to address this issue. In particular, he will present a bio-inspired infrared imager, which is based on the detection mechanism in the rod cells in the eye. The nanoinjection mechanism in this imager produces noiseless signal amplification, and his group has already demonstrated an infrared camera with two orders of magnitude higher sensitivity compared with existing cameras. Their latest progress in device nanoprocessing has reduced the detector noise by another factor of 30, which could lead to single-photon sensitivity. Finally, Mohseni will describe new findings in enhancing light-matter interaction with plasmonics and metamaterial and their impact on future photon detectors.

    Speaker Bio(s): 

    Hooman Mohseni is a professor of electrical engineering and computer sciences at Northwestern University. He is the recipient of several research and teaching award including a NSF CAREER Award, a Defense Advanced Research Projects Agency Young Faculty Award and the Northwestern University Faculty Honor Roll. Mohseni serves on the editorial boards of IEEE Photonics, IEEE Selected Topics in Quantum Electronics, Optics Letter and Frontiers in Materials. He has published over 115 peer-reviewed articles in major journals including Nature, Nano Letters and ACS Nano. He holds 14 issued U.S. and international patents. He is a fellow of the Optical Society (OSA) and SPIE.