Diffraction Optics of Complex-Structured Periodic Media: Localized Optical Modes of Spiral Media

This book presents recent theoretical and experimental results of localized optical modes and low—threshold lasing in spiral photonic media. Efficient applications of localized modes for low—threshold lasing at the frequencies of localized modes are a central topic of the book's new chapters. Attention is paid to the analytical approach to the problem. The book focuses on one of the most extensively studied media in this field, cholesteric liquid crystals. The chosen model, in the absence o...