On the Dielectric Function of Three-Level Systems under High Excitation

Huib J. Bakker

J.‐Y. Bigot, B. Hönerlage

Abstract Using the density matrix formalism for a three‐level system, the dielectric function is derived in the presence of two exciting light fields. Different limiting situations are discussed, the approximations involved and their respective validity.

Vladimir Leonardovich Derbov, S. N. Krasnobaev, Sergey K. Potapov

J.-Y. Bigot, J. Miletic, B. Hönerlage

We calculate the dielectric function of three-level systems like CuCl under high pulsed excitation in the nanosecond time scale. We find a memory effect of the crystal absorption and dispersion which is mainly due to the radiative lifetimes of the biexcitons created during the pulse.

Kazem Ardaneh, Mostafa Hassan, Jesús del Hoyo +6 more

B. Hönerlage, J.‐Y. Bigot

Abstract Using the dielectric function calculated for a three‐level system in the presence of two coherent light fields, renormalization effects are discussed due to a finite level population, to two‐photon transitions, and to exciton—biexcition transitions for CuCl.