University of Hawaii

Electrical Engineering

Chalcogenide photonics: from mid-IR sensing to photovoltaic light harvesting

Date: 2013-07-11
Time: 3:30 pm - 4:30 pm
Location: Holmes Hall 389
Speaker: Dr. Juejun Hu, University of Delaware

Chalcogenide glasses, namely the amorphous compounds containing sulfur, selenium, and/or tellurium, have emerged as a promising material candidate for integrated photonics given their wide infrared transparency window, almost infinite capacity for composition alloying, as well as high linear and nonlinear indices. This talk will review our recent progress on the processing and characterization of integrated photonic devices based on chalcogenide glass materials. Specifically, we will focus on three application areas: light management in photovoltaic cells using high-index, large-area glass nanostructures, on-chip nano-cavity enhanced spectroscopic chemical sensing, and photonic integration on unconventional plastic substrates for chip-to-chip optical interconnects.

About the speaker:
Juejun (JJ) Hu received his PhD from MIT in 2009 and is currently an assistant professor in the Department of Materials Science & Engineering at the University of Delaware. Dr. Huís primary research interest focuses on the enhanced photon-matter interactions in nanophotonic structures made of novel infrared glasses, with applications ranging from chemical sensing, photovoltaics, magneto-optics, and photonic integration on unconventional plastic substrates. Dr. Hu has authored and co-authored over 40 refereed journal publications since 2006 and has been awarded 6 U.S. patents.