讲座题目：Advanced photonic devices for optical upconversion, mid-infrared and terahertz applications

主 讲 人：班大雁教授

讲座时间：2019年6月18日下午2:00时

讲座地点：理学院201报告厅

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                                                                                理学院

                    2019年6月5日

讲座内容简介：

In this presentation, Pro. Ban will introduce their research efforts in past 14 years at the University of Waterloo, mainly focusing on two projects: organic/inorganic optical upconversion devices and semiconductor quantum cascade lasers. In the optical upconversion device project, they integrated an inorganic photodetector with an organic light emitting diode. The device can convert near infrared light at 1.5 m to visible light, enabling a new approach for achieving low-cost, large area near-infrared imaging. They had demonstrated the first up-conversion optical amplifier and the first upconverison near-infrared pixelless imaging device. In the semiconductor quantum cascade laser project, They designed a series of semiconductor quantum active regions and optimized device structures to achieve record-breaking terahertz quantum cascade lasers that can lase up to 199.5 K. Pro. Ban will also present some recent developments include THz QCLs based on an indirect-pumping scheme (so called phonon-photon-phonon design), a THz QCL with a dual lasing channel, as well as InAs/AlSb based QCLs, which demonstrate mid-infrared emission at room-temperature.

主讲人简介：

班大雁，加拿大滑铁卢大学电气与计算机工程系教授。早年于中国科技大学获得理学学士和硕士学位。2003年毕业于加拿大多伦多大学，获得电气和计算机工程博士学位。2002-2005年，渥太华国家微结构科学研究所研究员。2009-2010年，麻省理工学院电子研究实验室(RLE)访问学者。2011年至今，加拿大滑铁卢大学电气与计算机工程系教授。曾获得Ontario Early Research Award和CFI Leaders Opportunity Fund Award。

班大雁教授目前是IEEE/LEOS的高级成员，也是安大略省的注册专业工程师，在设计、制造、表征光电量子器件、纳米器件以及扫描探针显微镜技术方面进行20多年的研究，取得了一些国际公认的研究结果。其研究兴趣包括光电子学、半导体量子器件、太赫兹(THz)量子级联激光器、红外光学转换装置、红外成像器件、扫描探针显微技术、纳米技术与纳米制造等。在Nanoscale、Optics Express、Applied Physics Letters等期刊发表论文180多篇，拥有多项国际专利。