首页》回顾》金属结构件的高性能快速响应激光修复技术

10 W scale 1048nm femtosecond laser and applications for synchronously pumped Ti:sapphire laser and OPO

演讲课题:10 W scale 1048nm femtosecond laser and applications for synchronously pumped Ti:sapphire laser and OPO

演讲人:魏志义Zhiyi Wei

演讲摘要:

I will report our recent progresses on solid-state and fiber femtosecond lasers in this presentation. Based on previous research work, a passively mode-locked Yb:KGW oscillator is demonstrated with a semiconductor saturable absorber mirror (SESAM), pump by a 976 nm fiber-coupled diode laser. The maximum output power is 7.6 W with the pump power of 28.4 W, and the corresponding conversion efficiency is 26.8%. With chirped mirrors to control the dispersion compensation, the laser pulses as short as 160 fs at 1048 nm are obtained with a repetition rate of 78 MHz, the output power has a fluctuation of less than 1% RMS over 2 hours. In addition to, 60W average power was obtained from a fiber CPA laser with pulse duration of 153 fs and repetition rate of 1MHz. By using the frequency doubled femtosecond Yb:KGW laser as the pump source, we demonstrated a self-starting femtosecond Ti:sapphire laser, average power up to 256 mW with duration of 12.7 fs is obtained at a repetition rate of 151 MHz. In particular, synchronously pumped optical parametrical oscillator were realized with KTA, LBO and BiBO as nonlinear crystals, tunable wavelengths from 688 to 1057 nm with power up to 1.9 W, from 1.41 to 1.71 μm with power up to 2.32 W, from 2.61 to 3.84 μm with power up to 1.3W were demonstrated, the shortest laser pulse was 86 fs. Using these laser wavelengths as source for two photo microscope, STED and OCT, biology images with high resolution were obtained.

魏志义Zhiyi Wei

中国科学院物理研究所

 Zhiyi Wei obtained Ph.D degree in 1991. After two years postdoctoral fellow at Sun Yat-Sen (Zhongshan) University in China, he worked at the Rutherford Appleton Lab in UK, the Chinese University of Hong Kong, the Hong Kong University of Science and Technology, University of Groningen in the Netherland as a visiting scholar during 1993 to 1997. He joined in the Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences (CAS) in 1997. From April 2000 to Sept 2002, he also worked at the Advanced Industrial Science and Technology (AIST) in Japan as a NEDO researcher. He was promoted as associate professor and a full professor in 1993 and 1999 respectively. His research interests focus on ultrafast and ultrahigh intensity laser technology. Since 1985, Prof Wei has made a series of innovation progresses on generation, synchronization, amplification, frequency conversion and carrier envelop phase control of femtosecond laser, he also established the first domestic attosecond laser facility. Up to now, he has published more than 300 peer-reviewed papers. He has awarded by the State Natural Science Award (2nd-Class), the excellent achievements (team) and contributions (2nd-Class) for science and technology by CAS. He also won the Young Scientist Prize by CAS in 2001, Young Distinguish Scholar Funding by NFSC in 2002, Hu Gangfu Prize by the Chinese Physical Society in 2011. He was elected as OSA fellow in 2016. 

现场照片

相关议题

合作机构
无线电技术
仪器仪表商情
智能化网
光粒网
中焊网
中国机床网
国际工业自动化
机器人基地
高工机器人
3D打印信息网
3D打印智造网
传感器交易网
仪器仪表世界网
激光制造网
中国激光设备网
钣金与制作
高端装备发展研究中心
高端装备网
激光制造商情
行讯媒体
中国触摸屏网
中国自动化
aau资讯
投影时代
PCB信息网
激光网
大比特资讯
光易网
前瞻网
红外与激光工程
激光世界
3D打印爱好者
聚模网
智能网
国际金属加工网
亚洲自动化与机器人网
中国机器人网
易配在线
激光超市
机械人加工