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波片是研究偏振光的重要光学元件,在激光实验中更常使用。通常它是用单轴双折射晶体(如石英)或便于剥制的双轴晶体(如云母)精细加工制备的。本文介绍了一种用有机薄膜作1/4波片的方法,即在实验室中对工厂生产的大面积均匀的有机薄膜进行测量,挑选所需波长的1/4波片。一、有机薄膜1/4波片原理很多高分子有机薄膜,如涤纶薄膜、聚丙烯薄膜等,在加热拉伸成膜的过程中,其线度
Wave plates are important optical elements for the study of polarized light and are more commonly used in laser experiments. It is usually prepared by uniaxial birefringent crystals (such as quartz) or biaxial crystals (such as mica) for easy stripping. This article describes a method of using an organic thin film as a quarter-wave plate in which a large-area, uniform organic film produced by a factory is measured in a laboratory and a quarter-wave plate of a desired wavelength is selected. First, the principle of organic film 1/4 wave plate A lot of polymer organic films, such as polyester film, polypropylene film, in the process of heating and stretching film, the linear