International Postdoctoral Fellows Program: Single-atom Effects Responsible for the Generation of High Harmonics

该奖项是根据国际 博士后研究员计划，使 美国科学家和工程师将进行三次 在国外进行了12个月的研究， 卓越的中心。 该计划的 奖项提供机会， 研究，以及使用独特或 配套设施、专业知识和 国外的实验条件。 该奖项将支持为期12个月的 Justin博士的博士后研究访问 罗切斯特大学的皮特罗斯将前往 到俄罗斯的莫斯科到普通物理 研究所，俄罗斯科学院工作 M教授。费多罗夫 最近发现，高阶 激光的谐波可以产生时， 强激光与原子相互作用。 的 高次谐波产生效率 相对于较低的水平， 高，在扰动的范围之外 可以使用近似。 高次谐波 当激光强烈驱动原子时 它们正处于电离的边缘。 的 高次谐波的认识问题 生成有两个部分：1）单原子 对入射激光的响应，以及2） 原子的集体行为 所发射谐波的相位匹配 光 研究中心主要 关于单原子效应 高谐波的产生。 调查 将成为相关的 经典的运动方程 非线性势阱中的电子 好. 其他单原子描述 还将研究谐波产生。 授标建议提供资金， 包括国际旅行， 12个月，受抚养人津贴和现金 实验室费用

This award is under the International Postdoctoral Fellows Program, which enables U.S. scientists and engineers to conduct three to twelve months of research at foreign centers of proven excellence. The program's awards provide opportunities for joint research, and the use of unique or complementary facilities, expertise and experimental conditions abroad. This award will support a twelve-month postdoctoral research visit by Dr. Justin Peatross of the University of Rochester to go to Moscow, Russia to the General Physics Institute, Russian Academy of Sciences to work with Professor M. V. Fedorov. It has recently been discovered that high-order harmonics of laser light can be created when an intense laser interacts with atoms. The efficiency of generating the higher harmonics relative to the lower ones can be surprisingly high, outside of the range wherein perturbative approximations can be used. The high harmonics appear when a laser drives atoms so strongly that they are on the verge of ionization. The problem of understanding high-harmonic generation has two parts: 1) the single-atom response to incident laser light, and 2) the collective behavior of the atoms regarding the matching of the phases of the emitted harmonic light. The proposed research centers primarily on the single-atom effects responsible for the generation of high harmonics. An investigation will be made into the relevance of the classical equations of motion of a driven electron trapped in a non-linear potential well. Other single-atom descriptions of harmonic generation will also be investigated. The award recommendation provides funds to cover international travel, a stipend for twelve months, a dependent allowance and money for lab fees.