A dynamic model for the multiphoton interactions of an organic nonlinear absorber with pulsed lasers of various pulse durations spanning the femtosecond-to-microsecond time scale is presented. The formalism applies to all nonlinear absorbers with two-photon and singlet and triplet excited-state absorptions. Our quantitative analyses of experimental nonlinear transmission data and detailed exposition of the molecular dynamics have clearly illustrated the dynamic roles played by ground-and excited-states population saturation and depletion effects and their critical dependence on the laser intensity and temporal characteristics in governing the nonlinear transmission of pulsed lasers in such media.
|Original language||English (US)|
|Number of pages||9|
|Journal||Journal of the Optical Society of America B: Optical Physics|
|State||Published - Jul 1 2011|
All Science Journal Classification (ASJC) codes
- Statistical and Nonlinear Physics
- Atomic and Molecular Physics, and Optics