济宁学院本科毕业论文.doc

济宁学院本科毕业论文.doc济宁学院
本科毕业论文
光的干涉及其应用
李阳
2009020126
专业名 称 光信息科学与技术
中请学士学位所属学科
指导教师姓名、职称 M
2012年05月 30日
摘要
光的很多性质都在人们的生活、生产屮有着重要的作用，提到光的干涉不难 联想到风靡全球的3D电影，也不难想到全息干涉技术。因为它就是利用了光的 干涉来记录图像信息的。全息干涉技术可做到全场、定量、直观的无损检测，是 现代光学检测计量的重要手段0—，在科学研究、工业检测、生物医疗及国防军 事技术等领域具有广泛的应用。
全息记录介质是决定全息干涉系统性能极其应用范围的主要因索。传统全息 记录介质需要化学显影、定影处理，需要精准复位调整，尢法做到实时处理，且 不能重复使用。相比Z下光折变晶体作为全系干涉的记录介质则有其明显的优 点。采用此介质可充分发挥全息干涉与光折变晶体两方而的优点，可大大提高全 息干涉系统的实时性、灵活性。
选用新的光折变晶体，采用新的系统结构和技术，探索新的应用领域，从理 论与实践两个方面进一步深化光折变全息干涉技术的研究，是十分必要的。本论 文的研究工作，从理论与实践两方而对光折变全息干涉技术进行了深入的研究， 系统的研究了光折变全息干涉条纹衬比度的吋间变化特性，提出了一•系列新技 术、新方法，并探索了光折变全系干涉新的应用领域。
关键词：光的干涉、全息干涉技术、光折变晶体、条纹衬比度
Abstract
Many of the properties of light plays an important role in the life of people and production. Mention of light interference is not difficult to associate 3D popular global film ,and not difficult to think of holographic interferometry(HI).Because it is the use of the light interference to recording image interferometry ,witch permits whole-field and nondestructive optical testingjs one of the most powerful means of modern measurement and metrology techniquesJt is employed in numerous scie ntific 讥 echnical jndustrialfngineering and medical applications.
The holographic recording medium is decided by holographic interferometry system performance and its application scope of main factors-For the purpose of realtime holography and thermoplastic .the former is not recyclable and usually needs post-processing of uniform exposure to make its refractive index modulation stable ,while the latter suffers from the limited spatial resolution and the cumbersomeness of with the classical recording materials mentioned above ,photorefractive crystals(PRCs) have been under extensive studies in recent decades and considered as promising holographic recording materials in HI owing to their high resolution,adequate sensitivity which is controllable by changing their compositionsJarge storage capacity,realtime