题目：Semiconductor Intraband Quantum Processes and Terahertz Devices
报告人：Prof. H. C. Liu（National Research Council of Canada）
               
摘要：

Dr. H. C. Liu’s research consists of two parts: (1) cutting-edge science in nanostructures and (2) creation of sensing technologies. Terahertz (THz) technology is generally regarded as one of the most promising candidates to bring about totally new and revolutionary applications. Here, they use semiconductor nanostructures of quantum dots (QD) and quantum wells (QW) as well as their combinations. With QDs and QWs, atomic-like quantum processes between confined levels within the conduction band (intersublevel and intersubband transition) are studied, THz nanodevices such as emitters and detectors are investigated. Examples to be discussed are intersublevel transition in QDs and possible implementation of THz lasers based on this process, THz quantum well photodetectors, THz quantum cascade lasers, quantum optic processes, and potentially unique applications in the THz spectrum.

Prof. H. C. Liu 简介：

H. C. Liu was born in the city of Taiyuan in China.  He received his BSc in physics from Lanzhou University (China) in 1982, and PhD in applied physics from the University of Pittsburgh (USA) in 1987 as an Andrew Mellon Predoctoral Fellow.  Dr. Liu’s major research interest is semiconductor nanoscience and quantum devices.
Dr. Liu joined the Institute for Microstructural Sciences of the National Research Council of Canada in 1987.  He is currently the Imaging Devices Group Leader in the Institute.  Dr. Liu has authored or co-authored more than 300 refereed journal articles (with about 90 as first or sole author), and given more than 110 presentations (69 invited) at international conferences.  He was elected Fellow of the American Physical Society (APS) and Fellow of the Institute of Electrical and Electronics Engineers (IEEE), has been granted over a dozen patents, and has been awarded the Herzberg Medal from the Canadian Association of Physicists in 2000, the Bessel Prize from the Alexander von Humboldt Foundation in 2001, the Chinese Overseas Distinguished Young Scientist Award (NSFC-B) in 2005, and the Changjiang Chair Professorship at the Shanghai Jiaotong University in 2008. He holds chair/adjunct/guest/honorary professorships in 11 institutions in Canada, China, and the USA.

时间：2008年6月11日（星期三）上午10：00  
   
地点：中科院物理研究所D楼210会议室

联系人：金奎娟  研究员（Tel：82648099）

主办单位：中国科学院光物理重点实验室