Quantum Optics with Single Optical Cycles

单光循环的量子光学

• 批准号: 0555568
• 负责人: Hans Schuessler
• 金额: $ 44.64万
• 依托单位: Texas A&M Research Foundation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-04-01 至 2012-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0555568&HistoricalAwards=false
• 关键词: Quantum; Optics; Single; Optical; Cycles

In recent years technologies have been developed to generate pulses shorter than five femtoseconds in duration, thus consisting of less than two optical cycles in full-width half-maximum of the pulse. Such pulses are generally referred to as attosecond pulses, and the ability to produce them has created a new field of attosecond science. The present experimental research program will investigate a new approach for attosecond science and clarify some important questions underlying attosecond physics. Tailored single optical cycles will be used for analyzing interference phenomena in photoelectron spectra. The dependence of the interference patterns on the absolute phase of the few-cycle pulses will make it possible to infer the dynamics of electronic transitions. The technique will be developed using alkali atoms, but is expected to be applicable to molecules, too. There the dynamics of electronic transitions has a major impact on molecular reactions. The broader impact of the program involves the training of students as well as applications to other fields.

近年来，已经开发了产生持续时间短于5飞秒的脉冲的技术，因此在脉冲的全宽半峰中包括少于两个光学周期。 这种脉冲通常被称为阿秒脉冲，产生它们的能力创造了阿秒科学的新领域。 目前的实验研究计划将探索阿秒科学的新途径，并澄清阿秒物理的一些重要问题。剪裁的单光周期将用于分析光电子能谱中的干涉现象。干涉图样对几个周期脉冲的绝对相位的依赖性将使得推断电子跃迁的动力学成为可能。该技术将使用碱原子开发，但预计也适用于分子。在那里，电子跃迁的动力学对分子反应有重大影响。该计划的更广泛的影响涉及学生的培训以及应用到其他领域。