报告题目：高功率超快光纤激光器及其高次谐波产生

High power ultrafast fiber lasers and high harmonics generations

时间：2018年3月10日（星期六）上午9:30

地点：信息学院一楼会议室 

内容摘要：

    为了服务用于超导材料特性研究的光电子能谱实验，报告人开发了输出功率达百瓦、重复频率为1MHz的超快光纤激光光源，并通过两次三倍频过程，产生了功率可达毫瓦量级的真空紫外激光输出，光子能量为10.7eV。在报告中，将对如何进一步优化输出光束的特性以及长期工作稳定性等进行讨论，并对最新的实验进展进行汇报。此外，还将对基于飞秒增强腔的高重复频率高次谐波产生和基于单次通过结构的高重复频率高次谐波产生的实验结果进行对比。

        To facilitate the Angle Resolved Photoelectron Spectroscopy (ARPES) experiments, we have developed 100 W ultrafast fiber CPA laser system, with a repetition rate of 1 MHz. High photon energy source at 10.7 eV (115.6nm) was also generated based on cascaded two stage third harmonic generation (THG) configurations, whose average power can be on the order of ~1mW. In this presentation, the recent progress on further optimization on the beam profiles and beam source stability will be discussed. In addition, the results for VUV source based on femtosecond enhancement cavity (fsEC) and single pass high harmonics generation (SP-HHG) will also be shown. Finally, the speaker will give some discussion on the current status of high power ultrafast lasers.

 报告人简介：

赵智刚，博士，东京大学物性研究所特任研究员，目前主要从事高功率超快光纤激光器、高功率深紫外激光光源、重复频率可达MHz以上的真空紫外超快光源的研究与开发。分别于2006年和2011年在伟德BETVLCTOR1946和浙江大学获得学士学位和博士学位，随后赴德国柏林工业大学从事博士后研究一年。目前，已经在OE、OL、JSTQE、QE、APEX等主流杂志发表学术论文50余篇。

Dr. Zhigang Zhao is a researcher in the Institute for Solid State Physics (ISSP), the University of Tokyo, Japan. Currently, he is mainly involved in the development of high power ultrafast lasers, high power deep ultra-violet (DUV) lasers, and vacuum ultra-violet (VUV) beam sources with repetition rate on the order of ~MHz. Dr. Zhao got his bachelor degree from Shandong University in 2006, and doctor degree from Zhejiang University in 2011. Afterwards, he spent one year in Technische Universität Berlin, Germany, as a postdoctor. Since November 2012, Dr. Zhao moved to ISSP as a researcher. He has published nearly 50 papers on peer-reviewed journals, such as Optics Express, Optics Letters, IEEE Journal of Selected Topics in Quantum Electronics, IEEE Journal of Quantum Electronics, Applied Physics Express.