03 Jun 2019 An anamorphic prism pair is a pair of prisms which is usually used for reshaping th profile of a laser beam,the elliptical beam from a laser diodde can be transformed into a beam with circular cross-section,as is needed for many applications,by using a prism pair as a beam expander for only one direction(e.g,the horizontal one).Of course,one can also just modify the ellipticity.or convert a circular beam into an elliptical one.
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