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如果起偏振器和检偏振器的偏振化方向之间的夹角为30°,(1)假定偏振片是理想的,则非偏振光通过起偏振器和检偏 偏振光束分光器

2020-07-23知识9

如果起偏振器和检偏振器的偏振化方向之间的夹角为30°,(1)假定偏振片是理想的,则非偏振光通过起偏振器和检偏 设入射光为自然光,强度为I0。通过起偏振器后,光的强度为。再通过检偏振器后,按马吕斯定律,其出射光强为 ;nbsp;nbsp;nbsp;因此,出射光强与原来光强之比是 ;。如何区别自然光,部分偏振光,线偏振光,圆偏振光和椭圆偏振光 迎着光束,2113观看所有偏振矢量的5261最外边缘所形成的轨迹的4102形状(直线、1653椭圆、圆等版等)。单纯的使用偏振无法完全权区分这四种偏振光,应该再加上一个1/4玻片,具体如下:1、用偏振片进行观察,若光强随偏振片的转动没有变化,这束光是自然光或圆偏振光。这时在偏振片之前放1/4玻片,再转动偏振片。如果强度仍然没有变化是自然光;如果出现两次消光,则是圆偏振光,因为1/4玻片能把圆偏振光变为线偏振光。2、如果用偏振片进行观察时,光强随偏振片的转动有变化但没有消光,则这束光是部分偏振光或椭圆偏振光。这时可将偏振片停留在透射光强度最大的位置,在偏振片前插入1/4玻片,使玻片的光轴与偏振片的投射方向平行,再次转动偏振片会若出现两次消光,即为椭圆偏振光,即椭圆偏振片变为线偏振光;若还是不出现消光,则为部分偏振光。3、如果随偏振片的转动出现两次消光,则这束光是线偏振。有没有关于偏振分光器的理论知识 wiki上查到一些,搜索Polarization Beam Splitter就可以,不过是英文的相关部分如下:Beam-splitting polarizers split the incident beam into two beams of differing polarization.For an ideal polarizing beamsplitter these would be fully polarized,with orthogonal polarizations.For many common beam-splitting polarizers,however,only one of the two output beams is fully polarized.The other contains a mixture of polarization states.Unlike absorptive polarizers,beam splitting polarizers do not need to absorb and dissipate the energy of the rejected polarization state,and so they are suitable for use with high intensity beams such as laser light.True polarizing beamsplitters are also useful where the two polarization components are to be analyzed or used simultaneously.[edit]Polarization by reflectionA stack of plates at Brewster's angle to a beam reflects off a fraction of the s-polarized light at each surface,leaving a p-polarized beam.Full polarization at Brewster's angle 。用哪些方法可以获得线偏振光,怎样用实验来检验线偏振光 部分偏振光 自然光 共3 liweilinlin618 LV.2 2019-06-01 关注 获得线偏振光的方法: 1、用起偏器产生线偏振光。2、用双折射晶体偏振器产生线偏振光。3、利用折射产生线偏振光。。

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