Localized Modes in Optics of Spiral Media: An Analytic Approach

This book presents recent theoretical and experimental results of localized optical modes and low-threshold lasing in spiral photonic media. Efficient applications of these modes for low-threshold lasing at the frequencies of localized modes are a central topic of the book which emphasizes 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 of dielectric interfaces, overcomes the problem of polarization mixing at surfaces, layers and defect structures. It allows to reduce the corresponding equations to the equations for light of diffracting polarization only. The discussion concentrates on the edge and defect optical modes. The possibility to reduce the lasing threshold due to an anomalously strong absorption effect is theoretically treated for distributed feedback lasing. Analytic expressions for transmission and reflection coefficients are presented. Additionally, experimental observations of theoretically revealed phenomena in spiral photonic media are discussed. The main results obtained for spiral media are qualitatively valid for photonic crystals of any nature and therefore may be applied as a guide to investigate other photonic crystals where the corresponding theory is more complicated and demands a numerical approach. For the convenience of the reader, an introduction is given to conventional linear and nonlinear optics of structured periodic media. This book is useful for  researchers, postgraduate, and graduate students active in theoretical and experimental physics in the field of interaction of radiation with condensed matter. 

• ISBN: 978-3-319-43481-0
• Editorial: Springer
• Encuadernacion: Cartoné
• Páginas: 300
• Fecha Publicación: 09/06/2017
• Nº Volúmenes: 1
• Idioma: Inglés