Title: Recent Progress in Plasmonc and Metallic Cavity Semiconductor Nanolasers
Speaker: Cun-Zheng Ning, Professor , School of Electrical, Computer and Energy Engineering, Arizona State University
Time:10:00AM,Nov.28,2013
Venue:No. 101 Meeting Room, IOS, CAS
Abstract: Miniaturization has been an ever-lasting theme of nano science and technology. Shrinking the size of photonic devices has been driven both by the rich physics and by promising applications in future integrated nanophotonic systems. However, further size reduction of conventional semiconductor lasers becomes exceedingly challenging to meet the requirement of energy efficient data communication in the future. To significantly reduce the sizes of semiconductor lasers in all three dimensions, a semiconductor-metal core-shell structure was proposed and systematically analyzed in 2007. This was soon followed by the first experimental demonstration of lasing in such a core-shell structure in telecomm wavelenths. Since then, experimental and theoretical studies of plasmonic or metallic cavity nanolasers have flourished and rapid progress has been made.
In this talk, we will begin with a brief overview of short history and a background introduction to the plasmon-photon interactions, showing how such interactions might lead to sgnificant size reduction of a nanolaser. Recent progress in theoretical understanding and experimental demonstration will be presented systematically, including the first sub-diffraction-limit laser and first CW room-temperature sub-wavelength lasers demonstrated recently. Special emphasize will be on the unique features of metallic cavity nanolasers that distinguish them from the conventional lasers of pure dielectric cavities. The presentation will be concluded with a overview of current research and future perspective in nanolasers.
About Speaker:Cun-Zheng Ning, fellow of OSA and IEEE, is a Professor of Electrical Engineering at Arizona State University, USA. He received his PhD in Physics from the University of Stuttgart, Germany and has published over 170 papers including many in high impact journals, and given over 140 invited, plenary, or colloquium talks worldwide. He was a senior scientist, Nanophotonics Group leader, and Nanotechnology Task manager at NASA Ames Research Center from 1997 to 2007, and an ISSP Visiting Professor at University of Tokyo in 2006. He was a visiting professor at Technical University of Berlin in the summer of 2013, and currently at Tsinghua University. He was winner of several awards including NASA and NASA contractor Achievement Awards, NASA Space Act Patent Awards, CSC Technical Excellence Award, and IEEE/Photonics Society Distinguished Lecturer Award from 2007-2009. Current interests of his Nanophotonics Group at ASU include nanolasers, on-chip plasmonic sources, nanowire based detectors and solar cells, involving modelling, growth, fabrication, and characterization. Further information about his group can be found at http://nanophotonics.asu.edu.