Two-Pathway Coherent Control of Optical Interactions

光相互作用的双路相干控制

• 批准号: 0099477
• 负责人: Daniel Elliott
• 金额: $ 35万
• 依托单位: Purdue University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-08-01 至 2005-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0099477&HistoricalAwards=false
• 关键词: Two; Pathway; Coherent; Control; Optical

This program focuses on a series of experimental investigations of methods and applications of a technique for controlling optical interactions in atomic systems by taking advantage of the coherence properties of these interactions. These Two-Pathway Coherent Control processes make use of an interference that occurs when optical interactions proceed via two distinct excitation routes in atomic, molecular, or condensed phase systems. This interference has been shown to result in an enhancement or inhibition of excitation probabilities, control of the direction of propagation of photoelectrons or photoions, and control over the branching ratios of photoionization or photodissociation into different continuum channels. The projects in the program include: 1) a series of measurements that will explore the role of autoionizing resonances on the phase of the interference; 2) development of a techniques for sensitive detection of weak optical transitions; and 3) detailed investigations of a robust form of interference that is insensitive to the phase of the laser field.

该计划的重点是一系列的实验研究的方法和技术的应用，用于控制原子系统中的光学相互作用，通过利用这些相互作用的相干性。 这些双通道相干控制过程利用当光学相互作用经由原子、分子或凝聚相系统中的两个不同激发路径进行时发生的干涉。 这种干扰已被证明导致激发概率的增强或抑制，控制光电子或光离子的传播方向，以及控制光电离或光解离进入不同连续通道的分支比。 该计划中的项目包括：1）一系列测量，将探索自电离共振对干涉相位的作用; 2）开发一种灵敏检测弱光学跃迁的技术;以及3）详细研究对激光场相位不敏感的稳健干涉形式。