报告题目：Towards Few-Optical-Cycle Pulse Generation from Ytterbium/Thulium/Holmium mode-locked solid-state lasers

报告人：陈玮冬教授  中国科学院福建物质结构研究所

报告时间：2023年10月19日（周四）9:00

报告地点：理六栋302        邀请人：颜辉

报告内容：

Over the past several years, substantial progress has occurred in the development of mode-locked (ML) solid-state lasers emitting in the 1~2 μm spectral range based on Yb3+-, Tm3+- and Ho3+-doped or Tm3+ and Ho3+ co-doped crystals and ceramics, in particular towards femtosecond pulse generation. This advancement has been defined to a great extent by the availability of new host materials for these trivalent optically active rare-earth (RE) dopant ions. We discuss here essential requirements and properties of such materials for successful laser operation in the few-optical-cycle regime based on the 2F5/2 → 2F7/2 of Yb3+, 3H4→3H6 of Tm3+ and the 5I7→5I8 Ho3+ transitions and summarize more recent ML laser results.

专家简介：

Prof.Dr. Weidong Chen, Full Professor of the Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Senior Researcher of the Max Born Institute for Nonlinear Optics and Pulse Spectroscopy, Berlin, Germany (https://mbi-berlin.de/p/weidongchen, Department A3:Ultrafast Lasers and Nonlinear Optics). Topical Editor of Optics Letters (Optica, USA), Committee member of Advanced Solid State Lasers Conference (ASSL), Committee member of CLEO-Europe (Solid-State Lasers); Committee member of CLEO-Pacific Rim (Solid-State, Fiber, and Other Laser Sources). Research Fields: Generation, amplification, propagation and applications of ultrashort laser pulses in various spectral regions. All kinds of mode-locked lasers and mode-locking principles. Solid-state lasers based on rare earths and transition metals, in particular Nd, Yb, Er, Tm, Ho, and Cr-doped, in particular diode-pumped, CW, Q-switched, and mode-locked. Nonlinear optics with short and ultrashort pulses, in particular optical parametric amplification and oscillation. Frequency conversion of short and ultrashort pulses by nonlinear optical methods from the VUV to the mid-IR. Noel laser and nonlinear laser and nonlinear materials, their full characterization and engineering. Laser physics including spatio-temporal and vectorial dynamics of solid-state lasers, transverse pattern formation in solid-state lasers including vortex beams and structured laser beams.