OSC Colloquium: Sergei Tochitsky

    Thursday, November 7, 2019 - 3:30pm - 5:00pm
    Meinel 307

    1630 E. University Blvd.

    3rd Floor Lobby area


    Open to campus and public.


    Speaker: Sergei Tochitsky

    Topic: Long-Wave Infrared Filamentation in Air: Lasers and High-Field Phenomena

    Host: Jerry Moloney 

    Visit our website for future lecture dates and speaker information: http://www.optics.arizona.edu/news-events/events/colloquium For a list of our archived lectures: http://www.optics.arizona.edu/news-events/events/colloquium/archive


    Filamentation of a high-power laser beam in air opens possibility of the diffraction-compensated propagation of a laser beam over long distances and as such is being considered for remote stand-off detection, free-space communications, lightning control, and long-range projection of high-energy pulses. Switching to long-wave infrared (LWIR) range for filamentation, as shown in our recent experiments, allows for generation of a single centimeter-diameter channel in air. Such LWIR megafilament in air can guide many Joules of pulse energy and TW powers over multiple Rayleigh distances extending propagation to kilometer-scale distances. We will review status and challenges of high-power CO2 laser development and the atmospheric filamentation research at a wavelength of ~10 mm. 

    Speaker Bio(s): 

    Dr. Sergei Tochitsky, received a Ph.D degree in Laser Physics from the Institute of Physics, Academy of Sciences, Minsk in 1992. From 1998 he is with the UCLA Laser-plasma group where he is currently a Senior Scientist in charge of the Neptune Laboratory for Advanced Accelerator Studies. Over years Dr. Tochitsky lead effort to generate multi-TW power short CO2 laser pulses and successfully applied these high-power 10mm pulses for acceleration of electrons and protons in gaseous plasmas as well as nonlinear guiding of a laser beam in the atmosphere. He published more than 100 papers on lasers and high-field physics in the LWIR range.  He is a Fellow of The Optical Society of America.


    Refreshments 3:30pm

    Lecture @ 3:45pm - 5pm