Azimuthal Walsh Filters: A Tool to Produce 2D and 3D Light Structures

This book explores the possibility of using azimuthal Walsh filters as an effective tool for manipulating far—field diffraction characteristics near the focal plane of rotationally symmetric imaging systems. It discusses the generation and synthesis of azimuthal Walsh filters, and explores the inherent self—similarity presented in various orders of these filters, classifying them into self—similar groups and sub—groups. Further, it demonstrates that azimuthal Walsh filters possess a unique ...