报告题目：Planar Optical Sensor Platforms

报 告 人 ：Duk-Yong Choi, Ph.D., Associate Professor, Laser Physics Centre, The Australian National University; Part-time Professor at Jinan University, Guangzhou

报告时间：7月12号上午9点-11点

报告地点：信息学院 301会议室

邀 请 人 ：智能感知与光电检测技术研究所 李晋 副教授

Abstract: The ability to manipulate light at the mid-infrared (MIR) wavelengths between 3µm and 20μm is extremely important because of wide practical applications such as chemical/bio-sensing, astronomy, and thermal imaging. In this talk, I present two planar platforms for MIR optical sensors – current main research activities of mine in the Laser Physics Centre, the Australian National University. The first is chalcogenides planar waveguides; MIR light generation using their excellent nonlinearity and the application to chemical sensors. The second is hydrogenated amorphous silicon for dielectric metasurface; how we could achieve super-sensitive nanostructures design, fabricate MIR compatible sensors, and integrate with QCLs lights and micro-bolometer sensor array to dispense with the need for an actual spectrometer or tunable MIR light source. This progress can pave the way for sensitive and versatile miniaturized MIR spectroscopic devices and lab-on-a chip.

Resume：Dr. Duk-Yong Choi received BSc (1992), M.Sc (1994), PhD (1998) in Materials Science and Engineering at Seoul National University. He worked in Samsung Electronics from 1998.08 to 2004.12. Dr. Choi is now the associate professor in the Laser Physics Centre at the Australian National University. In the last five years, he has published ~60 SCI papers in the research interests of Chalcogenide photonic devices in Near and Mid Infrared; Silicon photonics: Hydrogenated amorphous silicon, c-SOI, Germanium laser; Metamaterials (collaboration with Prof. Yuri Kivsha & Dragomir Neshev); Nanostructured color filters (collaboration with Prof. Sang-shin Lee); Quantum Light-Matter Interface (collaboration with Prof. Matthew Sellars).