超快强激光场中纳米颗粒的电子离子发射(特邀)  

Electron and Ion Emission of Nanoparticles in Ultrafast and Intense Laser Field(Invited)

作　　者：孙烽豪 郑金梅 杨志杰 樊光琦 李辉 刘情操 Sun Fenghao;Zheng Jinmei;Yang Zhijie;Fan Guangqi;Li Hui;Liu Qingcao;无(School of Information Science and Engineering,Harbin Institute of Technology,Weihai,Weihai 264209,Shandong,China;School of Marine Science and Technology,Harbin Institute of Technology,Weihai,Weihai 264209,Shandong,China;School of Science,Harbin Institute of Technology,Weihai,Weihai 264209,Shandong,China;State Key Laboratory of Precision Spectroscopy,East China Normal University,Shanghai 200241,China)

机构地区：[1]哈尔滨工业大学(威海)信息科学与工程学院,山东威海264209 [2]哈尔滨工业大学(威海)海洋科学与技术学院,山东威海264209 [3]哈尔滨工业大学(威海)理学院,山东威海264209 [4]华东师范大学精密光谱科学与技术国家重点实验室,上海200241

出　　处：《光学学报》2024年第17期20-51,共32页Acta Optica Sinica

基　　金：国家自然科学基金青年科学基金(12204132,12304376,12227807,12422412);山东省优秀青年(海外)基金(2022HWYQ-073);山东省自然科学青年基金(ZR2023QA075);上海基础研究特区项目(TQ20240204);哈尔滨工业大学原创前沿探索基金(HIT.OCEF.2022042)。

摘　　要：在超短强激光脉冲的作用下,纳米结构表面会产生空间和时间急剧变化的局域极端近场,引发一系列动力学过程,包括表面分子及自身分子的光电子激发,电子、离子电离和碰撞等。借助先进的速度成像谱仪等装置,能够记录并解析这些过程中的光电子、离子信息。结合多种理论模型,可以深入理解纳米颗粒在强激光场下的发射动力学。这种理解不仅有助于实现纳米颗粒电离的精确调控,还为相关技术的实际应用开辟了新的可能。相关实验技术及其理论覆盖了多个学科领域,如原子、分子、凝聚态物理、化学和生物学等。综述了纳米颗粒产生、输运和诊断系统,深入分析强场-纳米颗粒体系的相关理论模型,最后总结了纳米光电子离子发射的最新研究成果,并展望未来的发展趋势。Significance In the past thirty years,measuring laser-induced fragments generated by atoms and molecules has become a key method for exploring and understanding atomic and molecular dynamics.Nanoparticles exhibit distinct size effects and surface near-field enhancement effects compared to individual atoms,giving them unique physical and chemical properties that have created immense technological and economic value in many application fields.The exploration of interactions between femtosecond laser pulses and nanostructures has led to many breakthrough scientific technologies,significantly advancing the fields of optoelectronics,nanoelectronic devices,nanomaterial processing,photocatalysis,biotechnology,and more.Understanding the ultrafast ionization dynamics of nanostructures is crucial for comprehending the fundamental physical processes at the atomic scale when nanostructures are excited by strong laser fields.This understanding is also valuable for regulating ultrafast ionization dynamics,promoting new nanotechnologies,and developing high-performance optoelectronic materials and chips.The scientific basis for these advanced technologies and cutting-edge applications lies in understanding the microscopic physical mechanisms of interactions between laser fields and micro-nano systems.With advancements in vacuum nanobeam source technology,the interactions between laser fields and individual nanoparticles using momentum detection spectrometers can be studied.Ultrafast femtosecond lasers,with their precise control time and frequency domains,offer high peak intensities and short pulse durations.The precise control over parameters such as wavelength,polarization,pulse width,intensity,and multi-pulse delay provides unprecedented methods for accurately measuring extreme ultrafast dynamic processes in nanomaterials,exploring strong field physical effects,and developing groundbreaking disruptive technologies.Utilizing nanoparticle beam targets in velocity imaging spectrometer systems has expanded laser ionization researc

关 键 词：强场电离 纳米颗粒 近场分布 电子离子发射 

分 类 号：O437[机械工程—光学工程]