非定域牛顿环的实验观察

Experimental Observation ofNon-fixedfrontier Newtonian Rings

相干性很好的HeNe激光束使牛顿环条纹生成于反射光束传播的空间.但是,激光的高亮度和高相干性给观察带来一定困难.这里,介绍了观察非定域牛顿环条纹的实验方法.

The Newtonian rings of HeNe laser beam are observed in the space where thelaser reflection beam from Newtonian ring is propagating. However, high brightness and high coherence bring about a trouble of the observatio of interference fringe. This paper in-troduces the experimental method of observing non-fixedfrontier Newtonian rings.