Recently, Professor Zhao Zengxiu's research team of National University of Defense Technology School of Science published two high-level papers in the Nature sub-job Nature Communication and the top physics journal " Physical Review Letters", elaborating on the breakthrough progress made by the research team in the research directions such as air laser and solid harmonics, and demonstrates the research team's advanced technology in the generation and detection of new light fields and the ability to achieve multi-time scale strong field ultrafast quantum regulation of microscopic quantum state . The research results will provide important support for related research in the fields of material science and information technology.
research team and research team of researcher Yao Jinping of , Shanghai Institute of Optical and Mechanical Engineering, observed the ultraviolet band supercontinuous coherent light with wavelengths ranging from 310 nanometers to 420 nanometers by femtosecond strong laser ionization air for the first time. They proposed a new laser synergistic continuous radiation (LACE) mechanism of nitrogen molecular ion laser, demonstrating the important role of strong field ionization and multi-photon resonance in coherent radiation in ion system, and provided a feasible solution for the preparation of full-band supercontinuous coherent light sources. The research results are published in the top international journal Nature Communications 2022, 13, 4080, under the title of "Ultraviolet supercontinuum generation driven by ionic coherence in a strong laser field". The first author is Lei Hongbin, a doctoral student in a department of the School of Science, and the corresponding author of , is Professor Zhao Zengxiu and Researcher Yao Jinping of the Shanghai Institute of Optoelectronics and Mechanics.
laser collaborative continuous radiation (LACE) mechanism diagram
research team and Professor S. Ghimire from Stanford University found for the first time that the high harmonic generated by adjacent atoms in the process of laser and solid will participate in the subsequent harmonic generation process through self-injection. Based on this self-injection mechanism, a new solution for ultraviolet injection to synergize solid high harmonic generation was proposed, successfully increasing the cutoff energy of solid high harmonics by three times, providing a new idea for the subsequent development of an A-second laser light source based on solid medium. The research results were accepted by Physical Review Letters, a top international physics journal, under the title "Proposal for high-energy cutoff energy: Proposal for high-energy cutoff extension of optical harmonics of solid materials using the example of a one-dimensional ZnO crystal. The first author is Lang Yue, a doctoral student in a department of the School of Science, and the corresponding authors are Associate Professor Liu Jinlei, Professor Zhao Zengxiu and Professor S. Ghimire, Stanford University, USA.
The three-step model of solid high-order harmonic expansion based on ultraviolet injection
research work has been supported by projects such as the National Natural Science Foundation of China, the National Key R&D Program , the National University of Defense Technology’s independent research, high-level innovation talent engineering and Youth Innovation Award.
Author | Zhao Jing Liu Jinlei
Editor | Xu Xin
