Conical Emission, Pulse Breakup and Self-Focusing in Laser-Driven Atomic and Molecular Vapors (Physics)

激光驱动原子和分子蒸气中的锥形发射、脉冲分裂和自聚焦（物理学）

• 批准号: 8822312
• 负责人: Cyrus Cantrell
• 金额: $ 10.43万
• 依托单位: University of Texas at Dallas
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-04-01 至 1993-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8822312&HistoricalAwards=false
• 关键词: Conical; Emission; Pulse; Breakup; Self

It is proposed to elucidate the origin and properties of the frequency-shifted conical emission and breakup of laser pulses into solitary waves observed in laser-driven atomic and molecular vapors. The studies bear on current issues of wave propagation in nonlinear media and departures from the adiabatic approximation of quantum mechanics. Topics include: (1) completion of the study of conical emission and pulse breakup in two level systems under condition of moderate self-focusing, (2) similar studies in multilevel systems, (3) studies of the effects on possible laser isotope separation processes, (4) similar studies under conditions of strong self-focusing, and (5) investigations of the possibility of intrinsic optical bi stability in an atomic vapor.

提出了在激光驱动的原子和分子蒸汽中观察到的激光脉冲的频移锥形发射和分裂成孤立波的起源和性质。这些研究涉及波在非线性介质中的传播和偏离量子力学的绝热近似的当前问题。主题包括:(1)完成中等自聚焦条件下两能级系统的锥形发射和脉冲破裂研究；(2)多能级系统的类似研究；(3)对可能的激光同位素分离过程的影响研究；(4)强自聚焦条件下的类似研究；(5)研究原子蒸汽中固有光学双稳定性的可能性。