研究目的
To review simpler approaches for understanding the nonlinear optical characteristics of various materials, focusing on molecular level properties and specific materials like conjugated polymers, chiral molecules, and liquid crystals.
研究成果
Simpler approaches, including time-independent perturbation theory and semiempirical models, provide practical means to understand and predict the nonlinear optical characteristics of materials like conjugated polymers, chiral molecules, and liquid crystals. These methods, while not as comprehensive as full quantum-mechanical treatments, offer valuable insights and have been validated against experimental results.
研究不足
The quantum-mechanical expressions for nonlinear optical susceptibilities are typically too complicated for practical calculations, necessitating simpler approaches that may not capture all nuances of the material's response.
