Diagnostic stand for quality control of diffractive optical element manufacturing

Abstract

A diagnostic stand has been created to study the parameters of laser radiation transformed by diffractive optical elements (DOE) designed for operation in the infrared range. The optical systems included in the stand allow recording the intensity distribution formed by the elements of micro-optics in different planes that is necessary to control the focusing quality and to estimate the focus depth. They also provide an opportunity to measure the DOE power efficiency. Experimental approbation of optical systems on the example of a reflecting binary cylindrical lens and a Fresnel lens has been carried out.