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【直播】【量子物理与量子信息科学·百望讲坛】新加坡南洋理工大学Qijie Wang教授 学术报告

KouShare 蔻享学术 2022-12-06





直播信息

报告题目

Quantum Cascade Lasers: Enabler for Mid-infrared and Terahertz Photonics

报告人(单位)

Prof. Qijie Wang(新加坡南洋理工大学)

报告时间

2022年6月23日(周四)15:00

主办方

北京量子信息科学研究院

官网链接:http://en.baqis.ac.cn/

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直播海报


报告人介绍

Prof. Qijie Wang 

Professor Wang Qijie is a full professor and the Associate Chair (Research) at School of Electrical and Electronic Engineering, Nanyang Technological University Singapore. He also holds a joint appointment at School of Physical and Mathematical Sciences at the same University. His research field is in the mid-infrared and Terahertz Photonics. He has published/co-published more than 200 papers in top international journals (like Nature, Science, Nature Photonics, Nature Nanotechnology, Nature Materials, and Nature Communications). He was the recipient of the IES (Institution of Engineers Singapore) Prestigious Engineering Achievement Team Award of Singapore Twice in 2005 and 2017, respectively, 30th World Culture Special Recognition Award 2013, the prestigious Singapore Young Scientist Award 2014, and Nanyang Research Award NTU 2015. He was elected as fellow of Optical Society of America (OSA) in 2019.

报告摘要

Mid-infrared (MIR) and Terahertz (THz) spectral regions, hereafter defined as the ~3 – 300 μm wavelength range, hosts particular scientific and technological interests. Many molecules have strong and rich spectral fingerprints in this MIR region, therefore, MIR photonic and nanophotonic devices are potentially very promising for a breath of applications such as environmental and bio-chemical sensing, industrial control, and medicine, etc. THz region has wide applications in free space communication, imaging and spectroscopy. However, MIR and THz regions remain a far from mature region, with a dearth in both passive and active components.

In this talk, I am going to present the working principles and our achievements of MIR and THz quantum cascade laser, which is a semiconductor based electrical pumping source that can be designed to cover almost the whole MIR and THz regimes. I am going to talk about different types of quantum cascade lasers with beam collimation, polarization, and emission controls, particularly on our recent innovation on topologically protected electrically pumped THz QCLs that are robust to defects and sharp corners.


扩展阅读

 

1.《2022百望讲坛·量子通信日》 :量子通信的基础研究进展

2.【量子物理与量子信息科学·百望讲坛】日本大阪大学Wataru Mizukami教授 学术报告

3.【量子物理与量子信息科学·百望讲坛】美国纽约市立大学城市学院物理系 Vinod Menon 教授 学术报告

4.【量子物理与量子信息科学·百望讲坛】澳大利亚悉尼科技大学 Igor Aharonovich 教授学术报告

5.【量子物理与量子信息科学·百望讲坛】美国华盛顿大学卡尔·本德教授:PT Symmetry

编辑:王媛媛

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