Abstract
The linear and nonlinear optical properties of commercially available CdSxSe1-x doped glasses are reviewed and the origin, magnitude, and temporal response of the nonlinearities are discussed. The room-temperature carrier dynamics are analysed using femtosecond interband pump-probe measurements. Our experimental results show the evolution of the carriers into a hot, quasi-thermal plasma distribution via electron-electron and electron-phonon scattering. The quasi-thermal distribution cools to the lattice temperature in about 750 fs filling the states just above the band-edge. This band-filling nonlinearity is seen as the bleaching of the absorption above the bandedge. The carrier recombination lifetime is measured to be ≅10 ps at higher carrier densities.
Original language | English (US) |
---|---|
Pages (from-to) | 1979-1993 |
Number of pages | 15 |
Journal | Journal of Modern Optics |
Volume | 35 |
Issue number | 12 |
DOIs | |
State | Published - Dec 1988 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics