Colloquium: Pierre Lucas

    Thursday, August 28, 2014 - 3:30pm - 5:00pm
    Meinel 307

    "Chalcogenide Glasses: Tuning Their Physical Properties for Applications in Optics"


    Chalcogenide glasses constitute the only class of amorphous materials with transparency extended far into the infrared regime, down to 25 microns. These glasses are composed of heavy elements including sulfur, selenium or tellurium, which confer them other unique properties such high optical nonlinearity, high electrical conductivity and low phonon energy for high-efficiency luminescence. The component elements also have similar electronegativity, so that the structure of chalcogenide glasses can be conveniently described as a network of covalent bonds. In this talk we will present the different applications of chalcogenide glasses to optics, and we will show how fundamental structural principles can be used to tailor properties and optimize their applications in optics.

    Speaker Bio(s): 

    Pierre Lucas is a professor of materials science and engineering at the University of Arizona and director of the CNRS International Associated Laboratory for Materials and Optics. He is the author of more than 70 peer-reviewed publications and six book chapters in the field of infrared glass and optical sensors. He is also the author of a book, “Rare-Earth Science, Technology, Production and Use.” His research focuses on the fundamentals and applications of infrared chalcogenide glasses, including their structure, physical properties and the development of novel optical sensors and fibers. He has chaired two international conferences on glass and optical materials and is an associate editor for the Journal of American Ceramic Society.