实践将光学推向拐弯处——光学实验新进展

Practice advances optics to the turning—New progress in the optical experiments

摘要: 光学实验中，使用波长为0.65um 红色激光照射不同孔径如0.08mm、0.20mm、0.30mm小孔，得到环纹数量不同，仔细观察视频及照片，发现孔径0.20 mm、0.30 mm的光学图片中环纹数量比孔径0.08 mm的多很多。接下来的实验里，用激光照射被粘胶有“碳纳米管”材料、孔径0.12 mm的小孔，演示观察屏上只出现一个没有环纹的孤斑。所以从实践中感悟，光的小孔衍射或光的衍射现象跟光直接发生作用的材料密切关联。

Abstract: Optical experiments, using 0.65um wavelength red laser irradiation with different aperture such as 0.08mm, 0.20mm, 0.30mm have different number of holes, rings, carefully observe the video and photos, found that the number of optical images with diameter 0.20 mm and 0.30 mm of the central lines is much more than the pore size of 0.08 mm. In the next experiment, the laser was irradiated with a hole of 0.12 mm, and a small hole in the carbon nanotube material was made of viscose, demonstrating that only one spot without a ring appeared on the viewing screen. Therefore, in practice, the small aperture diffraction or light diffraction of light is closely related to the material directly involved with light.