Direct and indirect two-photon processes in semiconductors
Abstract
The expressions describing direct and indirect two-photon absorption in crystals are given. They are valid both near and far from the energy gap. A perturbative approach through two different band models is adopted. The effects of the non-parabolicity and the degeneracy of the energy bands are considered. The numerical results are compared with the other theories and with recent experimental data in Zn and AgCl. It is shown that the dominant transition mechanisms are of the allowed-allowed type near and far from the gap for both direct and indirect processes.
- Publication:
-
Unknown
- Pub Date:
- July 1986
- Bibcode:
- 1986ditp.book.....H
- Keywords:
-
- Energy Bands;
- Energy Gaps (Solid State);
- Semiconductors (Materials);
- Squeezed States (Quantum Theory);
- Crystals;
- Silver Chlorides;
- Theoretical Physics;
- Zinc Oxides;
- Solid-State Physics