Functionalized Carbazole Azo Dyes for Nonlinear Optical Application

Nonlinear optics has been the subject of intensive research, because of its wide applications in field of photonics, nanophotonics and optoelectronics such as optical signal processing, broadband optical communications, integrated optics, optical sensing, optical poling, optical limiting, optical computing etc. Optical materials, with large coefficients of TPA and nonlinear refraction, are of prime importance in nonlinear optical applications. Recently the carbazole azo dyes have attracted much attention because they are forming a spacious group of products which shows a wide range of colours and shades. These compounds are of significant importance for chemistry and technological applications particularly for optoelectronics applications. They are mostly obtained by the coupling reaction of diazonium salts and amines or phenols. We show that such compounds could be suitable candidate and promising materials for nonlinear optical application. In this talk third nonlinear optical properties using DFWM and THG will be discussed. Additionally in this talk illustration of new system for optical recording and erasing of holograms under weak laser illumination will be discussed