文档介绍：
衍射光强分布的测实验报告
篇一：衍射光强分布的测试验报告
衍射光强分布的测量
1018406006 物理师范陈开玉
摘要：为了视察并验证单缝衍射和多缝衍射的图样以及它们的规律

四、试验步骤
()上正确安置好各试验装置，如上图5所示；翻开激光器，用小孔屏(白屏，有5mm小孔)调整光路，使激光束与导轨平行。
，预热5分钟；细致检查激光器、单缝和一维光强测量装置(千分尺)的底座是否放稳，要求在测量过程中不能有任何晃动；运用一维光强测量装置时留意鼓轮单方向旋转的特性〔幸免回程误差〕。
，将单缝调整到一适宜的宽度；由于试验所用激光光束很细，故所得衍射图样是衍射光斑[light spot]〔依据条件可配一准直系统，如倒置的望远镜，使物镜作为光入射口，将激光扩束成为宽径平行光束，即可产生衍射条纹〕。
篇二：衍射光强分布测量
衍射光强分布测量
***，物理学系
摘要：
本试验利用激光为光源探究激光经过单缝与单丝时的衍射光强度分布状况。激光的高准直性符合夫琅和费远场条件，且高单色性保证测量时没有不同波长光的叠加影响。。通过巴比涅原理迂回得到了没有直射光时单丝的衍射光强分布，完整验证了运用衍射光强分布来测量小微物体的长度的方法和可行性，并实际运用此法测量了铜丝和头发丝的直径。

关键词：衍射分布巴比涅原理单缝直径测量
The Measurement of the Distribution of Light Diffraction
Yixiong Ke Yi Lin, Department of Physics
Abstarct：
This experiment made use of laser as the light source to verify a series of diffraction patterns of 633nm laser via different single slits and collimation feature of the laser meets the condition of Fraunhofer diffraction, the monochromic featureof laser provide a better experimental environment that the diffraction pattern won`t be interfereby the light of other wave length. Weuselinear encorder connected to PC via ULI (Universal Laboratory Interface) as the sensor to automatically scan the diffraction pattern with the ratio of per dot. We useBabinet’s principleto get the diffraction pattern of a monofilament without the effect of the light which simply go through. Completely verified the method and feasibility of measuring a tiny object with its diffraction pattern. In addition, we try to measure the diameter of a copper wire and people’s hair in this way
Key s: Diffraction distribution Babinet`s