ACN Seminar Series (Nanophotonics)
1) "New Material Platforms & Metasurface Designs for Nanophotonics" by Vladimir M. Shalaev, Purdue University
2) "Near-Infrafed Plasmonics with Transparent Conducting Oxides" by Alexandra Boltasseva, Purdue University
1) New Material Platforms & Metasurface Designs for Nanophotonics
This lecture will outline the recent progress in developing new plasmonic materials that will form the basis for future low-loss, CMOS-compatible devices that could enable full-scale development of the metamaterial and nanophotonic technologies. Novel metasurface designs enabling a chip-compatible platform for nanophotonics and quantum photonics applications will also be discussed.
2) Near-Infrafed Plasmonics with Transparent Conducting Oxides
As a result of the significant attention in searching for alternative plasmonic materials for real-life nanophotonic devices, transparent conducting oxides (TCOs) have been proposed as promising constituent building blocks for telecommunication wavelengths. They are eminently practical materials because they are CMOS-compatible, can be grown on many different types of substrates, patterned by standard fabrication procedures, and integrated with many other standard technologies. Due to the ability of TCO nanostructures to support strong plasmonic resonance in the near infrared (NIR), metasurface devices, such as a quarter wave plate, have been demonstrated whose properties can be easily adjustable with post processing such as thermal annealing. Additionally, TCOs can be used as epsilon near zero (ENZ) materials in the NIR. From our recent study of the behavior of nanoantennae sitting upon a TCO substrate, we found that TCOs serve as an optical insulating media due to the high impedance of TCOs at the ENZ frequency, enabling emission shaping. Finally, the optical properties of TCOs can be varied by optical or electrical means. Current research is focused on studying the ultrafast carrier dynamics in doped zinc oxide films using pump-probe spectroscopy. We have shown that aluminum doped zinc oxide films can achieve a 40% change in reflection with ultrafast dynamics (<1ps) under a small fluence of 3mJ/cm2. Consequently, TCOs are shown to be extremely flexible materials, enabling fascinating physics and unique devices for applications in the NIR regime.
Vladimir (Vlad) M. Shalaev, Scientific Director for Nanophotonics in Birck Nanotechnology Center and Distinguished Professor of Electrical and Computer Engineering at Purdue University, specializes in nanophotonics, plasmonics, and optical metamaterials. Vlad Shalaev received several awards for his research in the field of nanophotonics and metamaterials, including the Max Born Award of the Optical Society of America for his pioneering contributions to the field of optical metamaterials, the Willis E. Lamb Award for Laser Science and Quantum Optics, Rolf Landauer medal of the ETOPIM (Electrical, Transport and Optical Properties of Inhomogeneous Media) International Association, the UNESCO Medal for the development of nanosciences and nanotechnologies and IEEE Photonics Society William Streifer Scientific Achievement Award, He is a Fellow of the IEEE, APS, SPIE, MRS and OSA. Prof. Shalaev authored three books, twenty-seven invited book chapters and over 400 research publications.
Alexandra Boltasseva is an Associate Professor at the School of Electrical and Computer Engineering and Birck Nanotechnology Center, Purdue University, and an adjunct Associate Professor at Technical University of Denmark (DTU). She received her PhD in electrical engineering at DTU in 2004. Boltasseva specializes in nanophotonics, nanofabrication, plasmonics and metamaterials. She received the 2013 IEEE Photonics Society Young Investigator Award, 2013 Materials Research Society (MRS) Outstanding Young Investigator Award, the MIT Technology Review Top Young Innovator (TR35) award that "honors 35 innovators under 35 each year whose work promises to change the world", the Purdue College of Engineering Early Career Research Award, the Young Researcher Award in Advanced Optical Technologies from the University of Erlangen-Nuremberg, Germany, and the Young Elite-Researcher Award from the Danish Council for Independent Research. She is a Fellow of the Optical Society of America (OSA) and a senior member of the IEEE and SPIE. Alexandra authored 98 journal articles (h-index 41, Google Scholar) with a total number of citations above 6100. For her contributions, she was elected to MRS Board of Directors and Editor-in-Chief for OSA’s Optical Materials Express.
|Venue||Kinesis, Level 6, Seminar Room 2 (4 Fusionopolis Way, Singapore 138635)
|Date||14 Dec 2015
|Time||2 - 4pm
|Please confirm your attendance by
||14 Dec 2015