Dynamical Control of Resonant Light-Matter Interaction

共振光-物质相互作用的动态控制

• 批准号: 1307346
• 负责人: Olga Kocharovskaya
• 金额: $ 22.5万
• 依托单位: Texas A&M University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-09-01 至 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1307346&HistoricalAwards=false
• 关键词: Dynamical; Control; Resonant; Light; Matter

The project will develop new dynamical methods to control the resonant light-matter interaction through modulation in time and/or in space of the parameters of the resonant atomic transition (frequencies and/or line widths) by means of the strong off-resonant control field. It includes the development of (i) a new highly efficient method for the formation of the VUV and XUV attosecond pulses via the spectrum broadening by means of the temporal modulation of the atomic parameters and (ii) a method to produce and to control optically the photonic structures in a homogeneous atomic media via special modulation of the refractive index induced by the strong laser field. A theory of the VUV and XUV radiation transformation during its propagation through an optically thick resonantly absorbing atomic medium, dynamically perturbed by a strong IR or optical laser radiation, will be developed. It will advance understanding and control of the strong ultrafast light-matter interactions, including appreciation of the role of the resonant, interference, and cooperative effects in such interactions. Attosec pulses provide a unique ultrafast tool for recording and control of the electronic motion in atoms, molecules, and nanostructures, leading to profound applications in chemistry and biology, medicine and energetics. Development of the new method of attosecond pulse formation with the pulse characteristics superior or complementary to those produced by the current high-harmonic-generation technique will further push those strategically and fundamentally important applications. Development of the new method for an optical production of the photonic structures in the homogeneously distributed atomic ensembles with the widely variable parameters, determined by the intensity and frequency of the control field, will essentially extend the applications of such structures for the control and manipulation of the flow of light. The graduate and undergraduate students will be trained in these interdisciplinary fields of atomic, molecular, and optical science, learning and developing the methods of coherent control of the light-matter interaction in the ultrafast strong-field regimes based on the modern laser technologies. Collaboration with experimental groups will be initiated, aiming at implementation of the newly developed dynamical methods of coherent control in the experimental investigations.

该项目将开发新的动力学方法，通过强非共振控制场在时间和/或空间上调制共振原子跃迁参数（频率和/或线宽）来控制共振光与物质相互作用。它包括开发（i）一种新的高效方法，通过原子参数的时间调制来展宽光谱，形成 VUV 和 XUV 阿秒脉冲；以及（ii）一种产生和控制光学阿秒脉冲的方法。通过强激光场引起的折射率的特殊调制，在均匀原子介质中形成光子结构。将开发 VUV 和 XUV 辐射在其传播通过光学厚共振吸收原子介质期间的变换理论，该介质受到强红外或光学激光辐射的动态扰动。它将促进对强超快光-物质相互作用的理解和控制，包括了解共振、干扰和协同效应在这种相互作用中的作用。 Attosec 脉冲提供了一种独特的超快工具，用于记录和控制原子、分子和纳米结构中的电子运动，从而在化学和生物学、医学和能量学领域产生深远的应用。开发新的阿秒脉冲形成方法，其脉冲特性优于或补充当前高次谐波产生技术所产生的脉冲特性，将进一步推动这些具有战略性和根本性的重要应用。开发用于在均匀分布的原子系综中光学生产光子结构的新方法，其参数变化很大，这些参数由控制场的强度和频率决定，将从本质上扩展这种结构在控制和操纵光的流动。研究生和本科生将接受原子、分子和光学科学跨学科领域的培训，学习和发展基于现代激光技术的超快强场区域光与物质相互作用的相干控制方法。将启动与实验组的合作，旨在在实验研究中实施新开发的相干控制动力学方法。