In recent years, intensive research efforts have been performed to realize compact/portable resonant absorbers. However, these resonant absorbers can usually be realized within relatively narrow bands at microwave, terahertz and infrared - visible frequencies for given incident angle and polarization state, due to the inherently narrow-band plasmon resonances. To overcome these limitations, in this presentation, we will discuss nanocavity enhanced light-matter interaction in ultra-thin films and patterned hyperbolic meta-film with engineered and freely tunable absorption band. These on-chip absorbers can easily be integrated with other on-chip electronic/optoelectronic devices, which is promising to create new regimes of optical/thermal physics and applications.

报告人简介： Dr. Qiaoqiang Gan is an Assistant Professor in the Department of Electrical Engineering at University at Buffalo, The State University of New York. He received his Bachelor's degree from Fudan University in 2003, his Master’s degree in 2006 in the Institute of Semiconductors at the Chinese Academy of Sciences, and his PhD degree from Lehigh University in 2010. He received IEEE Photonic Society Student Fellowship Award and Chinese Government Scholarship for Graduate Students Abroad in 2009. His current research interests include nanophotonics, plasmonics, and bio-photonics. His research publications include over 70 technical papers and 4 patents.