Two-photon absorption processes in semiconductor quantum dots
AUTOR(ES)
López Gondar, J., Cipolatti, R., Marques, G. E.
FONTE
Brazilian Journal of Physics
DATA DE PUBLICAÇÃO
2006-09
RESUMO
The two-photon absorption process is a nonlinear phenomenon that shows very low optical efficiency in bulk semiconductors. For this reason the detection of these processes becomes very difficult from the experimental point of view. Nevertheless, when dealing with semiconductor QD's with few nanometer radii, these transitions are enhanced and the detection is possible. In this contribution we present analytical calculations for the absorption coefficient in CdSe spherical QD's subjected to these second order processes, as a function of the characteristic dot parameters. The intensities of the absorption peaks, as well as the statistical treatment involving QD's ensembles, are also reported.
Documentos Relacionados
- Two-photon absorption photopolymerization microfabrication
- In vivo two-photon calcium imaging of neuronal networks
- Combinatorial discovery of two-photon photoremovable protecting groups
- Two-photon excitation microscopy of tryptophan-containing proteins
- Intracellular calmodulin availability accessed with two-photon cross-correlation
