Bond models in linear and nonlinear optics

作者：Aspnes D E^*

来源：Physica Status Solidi B-Basic Solid State Physics, 2010, 247(8): 1873-1880.

DOI：10.1002/pssb.200983937

• bond models
• frequency conversion
• nonlinear optics
• optical properties

Atomic-scale descriptions of linear-optical properties such as reflection are nearly a century old, but surprisingly, analogous models describing nonlinear-optical (NLO) properties as the natural dynamic response of bond charges driven by an external field are a recent development. These bond-charge models have proven to be particularly useful in describing the relevant physics of second-, third-, and fourth-harmonic generation, identifying previously unrecognized contributions to NLO responses, and uncovering well-disguised correlations in tensor parameters determined phenomenologically from symmetry conditions. Current capabilities are discussed, and opportunities for improved understanding noted.

• 出版日期2010-8