Answers are grounded in this paper and cite their sources.
The theory of two-photon absorption with provision for exciton effects is built on the basis of general principles without using any model of electronic states of the crystal. Electron-phonon interaction is neglected. The splitting of exciton levels into levels of transverse and longitudinal excitons is taken into account. The polarization dependence of two-photon absorption coefficient of allowed two-photon dipole transitions from the ground state of crystal for all 32 crystallographic classes is calculated. The results obtained are compared with the experimental data available.
No takes yet. Share an insight, caveat, or question.
Denisov et al. (1972) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: