Abstract
The accessibility of ultrashort high-repetition rate lasers has led to the study of many nonlinear optical (NLO) phenomena and their applications in photonics. Organic and polymeric materials have attracted enormous interest as materials from nonlinear optics because of their tailorability and easy processability. In this chapter we deal with the design and structure–property relationships in materials for second- and third-order NLO effects. The phenomena that are explored include Pockel’s effect, optical Kerr effect, and two-photon absorption (TPA). The factors contributing to the design of highly active NLO materials are discussed with examples to demonstrate various approaches.
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