Laser Based Experiments in Chemistry and Physics

大卫·格拉 西马里兰州学院 威斯敏斯特，MD 21157 ILI -仪器 项目名称： 化学 激光化学与物理实验（Laser Based Experiments in Chemistry and Physics） 西马里兰州学院将增加激光物理和激光光谱的重要组成部分，其物理化学，仪器技术和光学实验室。 此外，三门入门课程，其中两门为非科学专业，将通过激光的经验得到加强。 虽然激光在研究生研究中已经无处不在，但缺乏足够的仪器目前阻止了我们学生的任何有意义的“动手”经验。 通过添加几个配套的激光系统和外围设备，如单色仪和数字示波器，我们计划向学生介绍现代光学的物理基础和先进的光谱原理。 在物理化学和仪器技术中，许多重要的光谱技术，如拉曼，脉冲探针和发光衰减，将成为我们现代实验室不可分割的一部分。 这些主题目前仅限于我们课堂讨论中不适当的小角色。 建议的设备在仪器技术中特别相关，学生将从各个组件组装自己的温度计，即，光源、样品、单色器和检测器。 在光学中，学生将从单个组件构建激光器（即，增益介质、端镜、输出耦合器和调谐元件），并检查每个组件在系统的整体操作中的作用。 该练习将补充纵向和横向模式以及光学增益和损耗的理论讨论。 在普通物理中，在其他激光实验中，学生将使用脉冲氮激光器和数字示波器来确定光速。 我们的化学和物理学生的背景，其中大多数人继续研究生或专业学校，将大大提高由该项目支持的课程现代化。

David V. Guerra DUE 9552337 Western Maryland College FY1995 $24,735 Westminster, MD 21157 ILI - Instrumentation Project: Chemistry Title: Laser Based Experiments in Chemistry and Physics Western Maryland College will add the significant component of laser physics and laser spectroscopy to its Physical Chemistry, Instrumental Techniques, and Optics Laboratories. In addition, three introductory courses, two of them for non-science majors, will be enhanced by an experience with lasers. Although lasers have become ubiquitous in post-graduate research, a lack of adequate instrumentation currently prevents any meaningful "hands-on" experience for our students. Through the addition of several assorted laser systems and peripheral equipment such as a monochromator and digital oscilloscope, we plan to introduce students to the physical basis of modern optics and to advanced spectroscopic principles. In Physical Chemistry and Instrumental Techniques, many important spectroscopic techniques, such as Raman, pulse-probe, and luminescence decay, will become integral parts of our modern laboratories. Those topics are currently limited to an inappropriately small role in our classroom discussion. The proposed equipment is especially relevant in Instrumental Techniques where students will assemble their own spectrophotometers from the individual components, i.e., light source, sample, monochromator, and detector. In Optics, students will construct lasers from individual components (i.e., gain media, end-mirror, output-coupler, and tuning element) and examine the role of each component in the overall operation of the system. That exercise will complement theoretical discussions of longitudinal and transverse modes and optical gain and losses. In General Physics, a mong other laser experiments, students will use a pulsed nitrogen laser and a digital oscilloscope to determine the speed-of-light. The background of our Chemistry and Physics students, most of whom go on to graduate or professional schools, will be greatly enhanced by the curricular modernization supported by this project.