Relativistic Mid-Infrared Light Sources Driven by Laser-Plasma Interaction
by
Tsung-Dao Lee Institute/N6F-N601 - Meeting Room
Tsung-Dao Lee Institute
Host: Longqing Yi
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Abstract:
Relativistic few-cycle mid-infrared (mid-IR) pulses are unique tools for strong-field physics and ultrafast science, but are difficult to generate with traditional nonlinear optical methods. Here, we propose some novel schemes for their generation by using a chirp drive laser or a plasma rotator. In the first case, a negatively chirped laser pulse can be rapidly compressed longitudinally due to dispersion and plasma etching, and its central frequency is downshifted via photon deceleration due to the enhanced laser intensity and plasma density modulations. The latter is achieved by driving the magnetized underdense plasma with a relativistic linearly polarized laser. In the magnetized plasma, the drive laser undergoes photon deceleration and relativistic Faraday rotation, leading to the generation of relativistic polarization-tunable mid-infrared (mid-IR) pulse with intensity of 1016 W/cm2 and a spectral width of 5-25 um. The mid-IR sources obtained offer new opportunities for strong-field physics, attosecond science, etc.
Biography:
Tongpu Yu is a professor at the National University of Defense Technology (NUDT), specializing in high-intensity laser–plasma interactions. He received his Bachelor's degree from Central China Normal University in 2005 and his Master's degree from NUDT in 2007. From 2008 to 2011, he pursued his Ph.D. in Natural Science at the University of Düsseldorf, Germany, under the supervision of Prof. Alexander Pukhov. After completing his doctorate, he returned to NUDT as a faculty member.
Prof. Yu has been honored with several distinguished awards, including the Asia-Pacific Plasma Physics “Young Scientist” Award (U40), the Wang Daheng Optics Award for Middle-Aged and Young Researchers, and the National Plasma Science and Technology Outstanding Youth Innovation Award. He has published over 160 SCI-indexed papers in renowned journals such as Nature Communications, Science Advances, Physical Review Letters, and Light: Science & Applications. Currently, he serves as an Associate Editor for the European Physical Journal D (EPJD) and as an editorial board member of Matter and Radiation at Extremes (MRE).
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