U.S.-France Cooperative Research: Light Reflection from a Chiral Medium

美法合作研究：手性介质的光反射

• 批准号: 9016008
• 负责人: Mark Silverman
• 金额: $ 1.33万
• 依托单位: Trinity College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-05-01 至 1993-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9016008&HistoricalAwards=false
• 关键词: U.S.; France; Cooperative; Research; Light

This award will support collaborative research between Dr. Mark Silverman, Department of Physics, Trinity College, and Dr. Jacques Badoz, Optics Laboratory, Ecole Superieure de Physique et Chimie, Paris, France. The objective of the project is to investigate the interaction of light with chiral media. Molecules and molecular arrangements characterized by a left- or-right-handedness (chirality) interact with polarized light to produce diverse phenomena collectively referred to as optical activity. In this project, experiments to measure the difference in specular reflection of right and left circularly polarized light from selected optically active fluids and crystals will be undertaken for the purpose of 1) resolving a fundamental controversial issue in the electrodynamics of chiral media, and 2) determining the feasibility of a new approach to the spectroscopy of chiral materials. The experimental method will employ photoelastic modulation of the polarization of the reflecting probe beam and subsequent phase-sensitive detection. From the resulting signal, the generalized Fresnal coefficients for an isotrophic naturally chiral medium will be measured for the first time as a function of angle of incidence and wavelength, and compared with recent theoretical predictions. The interaction of light with chiral media is of major interest in physics, chemistry, engineering and the biosciences for both conceptual and practical reasons. The scientific and educational significance of the proposed project is that it provides a stringent test of inequivalent electrodynamic descriptions of chiral media. The project will benefit from the complementary expertise and previous successful joint work of the two investigators, as well as from the availability of special instrumentation in the French laboratory.

该奖项将支持博士之间的合作研究。 Trinity学院物理系的Mark Silverman， Jacques Badoz博士，光学实验室，巴黎高等专科学校 法国巴黎的Physique et Chimie 的目的 项目是研究光与 手性介质 分子和分子排列的特点是左- 或右手性（手性）与偏振光相互作用 产生了各种各样的现象， 旋光性在这个项目中， 左右圆镜面反射差 来自选定的光学活性流体的偏振光， 晶体将进行的目的是1）解决一个 电动力学中一个基本的有争议的问题， 手性介质，以及2）确定新的 手性材料光谱学的方法。 的 实验方法将采用光弹性调制， 反射探测光束的偏振以及随后的 相敏检测。 从产生的信号， 自然界中各向同性的广义Fresnal系数 手性介质将首次作为一种 入射角和波长的函数，并比较 最近的理论预测。 的相互作用 具有手性介质的光是物理学中的主要兴趣， 化学、工程和生物科学， 和实际原因。 科学和教育 建议项目的重要性在于它提供了一个 不等价电动力学描述的严格检验 手性介质该项目将受益于互补的 专业知识和以前成功的联合工作， 调查员，以及从可用的特别 法国实验室的仪器。