Using two frequency-doubled, mtrogen laser pumped, dye-lasers we hJvvc measured the decay of the photon-echo in the lowest r&u -'Alg singlet state of naphthalene in durene and m perdeurero-naphthalene. Optical phase relaxation in the durene m&ed crystal is believed to be caused by resonant phonon s
A photon echo study of pentacene in naphthalene at high pressure
โ Scribed by Robert A. Crowell; Eric.L. Chronister
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 638 KB
- Volume
- 216
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
Optical absorption and picosecond photon echo evpenments are used to study the dephasing of pentacene in benzoic acid. It IS shown that, while the absorption spectrum of pentacene is effected by proton transfer in the benzoic acid dimer, the dephasng IS caused by elastic and loelastx phonon scatter&
Photon echo evperlments are performed on delocabzed electromc evcltatlons of optxal dlmer states The delGuhzed dlmer states are found to have very long coherence times. close to the coherent hnxt The dlmer dephasmg IS quabtatlvely slmdar to dephasmg of pentacene monomers.
Resonance Raman suttermg IS used to mvcstigate vrbrational dephasing m the mwd crystal of pcntawnc m nrphtha[enc. It IS shown that, as for the pure electronic tratwtion, unconekaed resonant phonon scattenng proccsscs in the ground and ~rbratlonally ewed state induce nbrational dcphaing in th& syste
Results of picosecond photon-echo experiments on zincporphin in an ethanol glass at I .5 K are reported and discussed. At I .5 K, the two-pulse photon echo yields a pure dephasing time constant, a factor of 5.7 larger than the long-lived stimulated photon echo for a waiting time of 25 ms. This resul