Calculations On Nonlinear Optical Properties For Large Systems The Elongation Method 1st Edition Feng Long Gu by Feng Long Gu, Yuriko Aoki, Michael Springborg, Bernard Kirtman (auth.) 9783319110677, 3319110675 instant download after payment.

For design purposes one needs to relate the structure of proposed materials to their NLO (nonlinear optical) and other properties, which is a situation where theoretical approaches can be very helpful in providing suggestions for candidate systems that subsequently can be synthesized and studied experimentally. This brief describes the quantum-mechanical treatment of the response to one or more external oscillating electric fields for molecular and macroscopic, crystalline systems. To calculate NLO properties of large systems, a linear scaling generalized elongation method for the efficient and accurate calculation is introduced. The reader should be aware that this treatment is particularly feasible for complicated three-dimensional and/or delocalized systems that are intractable when applied to conventional or other linear scaling methods.