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.

该程序着重于通过利用这些相互作用的相干性能来控制原子系统中光学相互作用的方法的一系列实验研究。 这些两条径道相干控制过程利用了当光学相互作用通过原子，分子或冷凝相系统中的两个不同的激发途径进行时发生的干扰。 已显示这种干扰可提高或抑制激发概率，控制光电子或光电剂的传播方向，并控制光电离或光电解共解的分支比到不同的连续性通道。 该计划中的项目包括：1）一系列测量值，这些测量将探讨在干扰阶段自动化共振的作用； 2）开发一种敏感检测弱光学转变的技术； 3）对强大的干扰形式的详细研究对激光场的阶段不敏感。