Optical Dephasing and Acoustic Plasmon Undamping in Highly Excited Semiconductors

Optical dephasing, i.e., the decay of the polarization field in a semiconductor, is a direct consequence of electron and hole scattering. Under high excitation conditions or in a semiconductor amplifier/laser, carrier-carrier scattering is often the dominant relaxation mechanism, which also leads to energy-level broadening and dynamical screening of the Coulomb interaction potential. The theoretical analysis of carrier-carrier scattering is based on the quantum Boltzmann equation. Even though this equation is well known in the many-body literature, its solution for high excitation conditions and nonequilibrium carrier distributions is a substantial challenge.

Access to the full text of this article is restricted. In order to view this article please log in.


Add a Comment

comments powered by Disqus