Surface second harmonic generation of chiral molecules using three-coupled-oscillator model

• 来源期刊: 中国物理（英文版）
• 关键词: molecular chirality three-coupled-oscillator model second-order susceptibility second-harmonic generation
• 年，卷（期）: 2006,（11）
• 页码范围: 2623-2630
• 页数: 8页
• 语种: 英文

摘要

Based on the three-coupled-oscillator molecular model we proposed, the relation between the second-order susceptibilities of a chiral film and the molecular hyperpolarizabilities is given. The effect of microscopic parameters on the second-order susceptibilities is simulated numerically and the difference between the efficiencies of s-polarized second-harmonic fields induced by the left- and the right-handed circularly-polarized fundamental beams is discussed. The theoretical basis for studying second-order nonlinear optical properties of the chiral molecular media with a tripod-like structure is provided in this paper.