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，通过在时间和/或在谐振原子过渡的参数（频率和/或线宽度）的参数的空间中，通过强大的偏置控制场来控制谐振光 - 物体的相互作用。它包括（i）开发一种新的高效方法，用于通过频谱通过频谱拓宽来形成原子参数的时间调节，以及（ii）一种在同质原子媒体中通过特殊的原子培养基中的特殊调节而通过固定索引诱导的强度识别的方法来产生和控制光子结构的方法。 VUV和XUV辐射在其传播过程中通过光学厚的吸收原子介质的传播理论将开发出强烈的IR或光学激光辐射。它将提高对强大的超快相互作用的理解和控制，包括对这种相互作用中谐振，干扰和合作效应的作用的欣赏。 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，医学和能量学中实现了深刻的应用。开发新的脉冲形成方法，其脉冲特征与当前高谐波生成技术所产生的脉冲特征更优越或互补，将进一步推动这些战略性和根本上重要的应用。开发新方法在均质分布的原子合体中具有广泛可变参数（由控制场的强度和频率）确定的光子结构的光学产生，基本上将扩展此类结构对光流的控制和操纵的应用。研究生和本科生将在原子，分子和光学科学的这些跨学科领域进行培训，学习和开发基于现代激光技术的超快强场策略中对光 - 象征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。