Modern Optics Laboratory

[9350897 Leung]提议的工作涉及进一步发展和改进现代光学实验室课程中的一些实验，重点是光与物质的相互作用，激光特性和现代光学技术。课程的目的是使学生能够进行更精确的测量，超越基础知识，熟悉最新的设备。该项目是该大学光学中心计划发展的一部分。一个中心设备是一个可编程的VIS/UV分光光度计。这使学生能够准确测量罗丹明6G在水中的振荡强度，用于经典色散理论的实验，用于带隙能实验中CdS的吸收光谱，用于法拉第旋转实验中含铅玻璃的吸收光谱。利用氩离子激光器和光子计数器系统对光散射实验进行了改进。学生可以测量不同激光波长的光的强度，以及不同的散射角度。用氮激光泵浦染料激光器，学生测量CdS光电探测器的响应时间。学生对探测器的反应时间有一个概念是很重要的。在光学滤光实验中，学生使用由CCD相机、摄帧器和个人电脑组成的新型光学成像系统记录滤光后的图像并进行精确分析。在电光学实验中，学生控制波克尔斯电池的功能，并利用计算机分析通过电池的光的状态。最后，一个新的实验说明了利用光弹性调制器和相敏检测器进行光调制和解调的强大技术。＊＊＊

9350897 Leung The proposed work involves the further development and improvement of a number of experiments in a Modern Optics Laboratory course emphasizing light interactions with matter, laser properties and modern optical techniques. The aim of the course is to enable students to make more precise measurements, advance beyond the fundamentals and become familiar with the latest equipment. The project is part of the planned development of an optics center at the university. One central piece of equipment is a programmable VIS/UV spectrophotometer. This allows students to measure accurately the oscillator strength of rhodamine 6G in water for the experiment dealing with the classical dispersion theory, the absorption spectrum of CdS in an experiment dealing with band-gap energy, and the absorption spectrum of leaded glass in an experiment concerning Faraday rotation. The light scattering experiment will be improved with an argon-ion laser and a photon counter system. Students can measure the intensity of light at different lasing wavelengths, as well as different scattering angles. With a dye laser pumped with a nitrogen laser, students measure the response time of CdS photodetectors. It is important that students have a concept of response time of a detector. For optical filtering experiments, students use a new optical imaging system consisting of a CCD camera, a frame grabber and a personal computer to record the filtered images and analyze them precisely. For an electrooptics experiment, students control the function of a Pockels cell and analyze the state of light passing through the cell with a computer. Finally a new experiment illustrates the powerful technique of optical modulation and demodulation using a photoelastic modulator and a phase-sensitive detector. ***