Controlled Momentum Exchange between Light and Helium Atoms

光和氦原子之间的受控动量交换

• 批准号: 0098044
• 负责人: Harold Metcalf
• 金额: $ 28.2万
• 依托单位: SUNY at Stony Brook
• 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: 2001-10-01 至 2006-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0098044&HistoricalAwards=false
• 关键词: Controlled; Momentum; Exchange; between; Light

The short term goal of this project is to explore and exploit optical forces on atoms, particularly metastable helium atoms, that derive from improved control of the momentum exchange between the atoms and the light field. This improved control arises from carefully orchestrated, rapid, coherent sequences of absorptions followed by stimulated emissions using non-chromatic light. The longer term plans are for applications of the extremely cold and dense sample of helium that can be produced with these large forces. High on the list of possibilities under consideration is exploitation of the high internal energy for nanofabrication by lithography using self-assembling monolayers to pattern a resist.

该项目的短期目标是探索和利用原子，特别是亚稳态氦原子上的光学力，这些力来自于原子与光场之间动量交换的改进控制。 这种改进的控制来自于仔细编排的、快速的、相干的反射序列，随后是使用非色光的受激发射。 长期计划是应用极冷和稠密的氦样品，这些样品可以用这些大的力量产生。 正在考虑的可能性清单上的高是利用高内部能量的纳米纤维通过光刻使用自组装单层图案化的抗蚀剂。