Strong-Field Nonlinear Optics of Sub- and Near- Wavelength Scale Particles

亚波长和近波长尺度粒子的强场非线性光学

• 批准号: 0099389
• 负责人: Todd Ditmire
• 金额: $ 37.18万
• 依托单位: University of Texas at Austin
• 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: 2001-07-01 至 2005-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0099389&HistoricalAwards=false
• 关键词: Strong; Field; Nonlinear; Optics; Sub

Modern multi-terawatt, femtosecond chirped pulse amplification lasers easily make possible studies of matter subject to unprecedented light intensities. The interactions of this laser radiation with various types of materials have accessed a new regime of strong field nonlinear optics, a regime in which perturbation theory breaks down and very high order nonlinear processes are possible. The experimental work in this proposal is aimed at understanding the nonlinear optical properties of particles of sizes ranging from a few nanometers to a few microns in the strong field regime. These studies are of interest not only because they will elucidate the electron dynamics in these strong field interactions but also because such studies may lead to enhanced conversion efficiencies of laser light to short wavelength light, and therefore have a direct bearing on the development of coherent, ultrafast-laser-driven short wavelength sources.

现代的多太瓦、飞秒啁啾脉冲放大激光器很容易使人们在前所未有的光强度下研究物质成为可能。 这种激光辐射与各种材料的相互作用已经进入了强场非线性光学的新领域，在这个领域中，微扰理论被打破，非常高阶的非线性过程是可能的。 本提案中的实验工作旨在了解强场状态下尺寸从几纳米到几微米的颗粒的非线性光学性质。 这些研究是有趣的，不仅因为它们将阐明这些强场相互作用中的电子动力学，而且因为这样的研究可能会导致增强激光到短波长光的转换效率，因此对相干，超快激光驱动的短波长光源的发展有直接的影响。