@inproceedings{HartmannTakahashiMukameletal.1994, author = {Hartmann, Michael and Takahashi, Akira and Mukamel, Shaul and Schreiber, Michael}, title = {Soliton and Exciton Effects in Femtosecond Pump Probe Spectroscopy of Conjugated Polymers}, series = {International Conference on Excitonic Processes in Condensed Matter, Darwin}, booktitle = {International Conference on Excitonic Processes in Condensed Matter, Darwin}, url = {http://nbn-resolving.de/urn:nbn:de:0298-opus4-5859}, year = {1994}, abstract = {Keine Angabe - No details}, language = {en} } @inproceedings{HartmannTakahashiMukamel1994, author = {Hartmann, Michael and Takahashi, Akira and Mukamel, Shaul}, title = {Soliton and Exciton Effects on Photoexcited Conjugated Polymers}, series = {2nd International Topical Conference on Optical Probes of Conjugated Polymers and Fullerenes, Salt Lake City}, booktitle = {2nd International Topical Conference on Optical Probes of Conjugated Polymers and Fullerenes, Salt Lake City}, year = {1994}, abstract = {Keine Angabe - No details}, language = {en} } @article{HartmannSchreiberStreitwolfetal.1995, author = {Hartmann, Michael and Schreiber, Michael and Streitwolf, H.-W. and Mukamel, Shaul}, title = {Nonlinear optical excitations in femtosecond spectroscopy of conjugated polymers}, series = {Journal of Luminescence}, volume = {66-67}, journal = {Journal of Luminescence}, url = {http://nbn-resolving.de/urn:nbn:de:0298-opus4-5795}, pages = {97 -- 101}, year = {1995}, abstract = {We have investigated the optical excitation of solitons and charge transfer excitons in polymer chains by solving the equations of motion for the reduced density matrix and the lattice displacement simultaneously in time. Electron-phonon coupling leads to polaron-exciton formation which can be identified in transient pump-probe signals.}, language = {en} } @article{HartmannChernyakMukamel1995, author = {Hartmann, Michael and Chernyak, Vladimir Y. and Mukamel, Shaul}, title = {Real-space coupled-oscillator approach to the radiative decay of conjugated polymers}, series = {Physical Review B}, volume = {52}, journal = {Physical Review B}, number = {4}, url = {http://nbn-resolving.de/urn:nbn:de:0298-opus4-5813}, pages = {Keine Angabe - No details -- Keine Angabe - No details}, year = {1995}, abstract = {The optical response of conjugated polymers is calculated using a one-dimensional tight-binding model with Coulomb interactions, and adopting the multipolar form for the electromagnetic field Hamiltonian. By formulating the problem using the reduced single-electron density matrix and its evolution in Liouville space, we obtain a real-space description for the elementary electronic excitations. A unified expression for the linear response including radiative decay, which is valid for arbitrary chain size compared with the optical wavelength, is described. For small sizes it shows exciton confinement effects on the radiative decay and for larger sizes it fully incorporates polariton effects.}, language = {en} }