Performance enhancement in a modal wavefront sensor and its application to free space optical communication

Abstract

Wavefront is a fundamental feature of a light beam It can be defined as the surface constructed by the loci of points having the same phase or the points that correspond to equal optical path lengths starting from the source When a coherent light beam such as a laser beam passes through certain medium or gets reflected by certain surface the wavefront of the light beam gets modified in such a way that the modification is characteristic of the transmitting medium or the reflecting surface Thu