We have solved the effective-mass nonlinear Schrödinger equation for an electron-hole gas in a semiconductor superlattice in space and time. Considering a Coulomb interaction between both electron-hole gases in a semiconductor superlattice we have obtained a time-varying dipole moment in the heterostructure. In this way, we have shown the possibility of another kind of terahertz electromagnetic radiation that emerges from a semiconductor superlattice after optical excitation of the sample.
Journal of Applied Physics
- Pub Date:
- September 2005
- Microwave and radio-frequency interactions;
- Fermi surface: calculations and measurements;
- effective mass g factor