Determining the wave-front deformations of a light beam due to waviness of optical surfaces

摘要

This paper presents a method of determining the wave-front deformations of a focused light beam due to waviness of optical surfaces. The relationship on which the method is based is found that connects the wave-front deformations with intensity fluctuations in the image of a beam outside the focal region. Numerical simulation of the method and experimental studies of a light beam distorted by the wavy surface of a parabolic mirror showed that wave-front deformations can be determined to within a relative error of 10% in the range from a few nanometers to several hundred nanometers. (C) 2019 Optical Society of America