Photon-Echo Spectroscopy of Organic Mixed Crystals
Thijs J. AartsmaLaboratory for Physical Chemistry, University of Groningen, Groningen, The NetherlandsDouwe A. WiersmaLaboratory for Physical Chemistry, University of Groningen, Groningen, The Netherlands
1976en
ABI
Abstract
We report the first observation of photon echoes in an organic mixed crystal. The echo was observed after excitation with a nitrogen-laser-pumped dye laser in the $^{1}B_{2\mathrm{u}}\ensuremath{\leftarrow}^{1}A_{g}$ electronic transition at 3739.9 \AA{} of pyrene in biphenyl at 2 K. The photon-echo excitation spectrum of the origin (zero-phonon line) region shows that drastic variations occur in the coherence lifetime of sites which, qua incoherent (fluorescent) decay, are indistinguishable.
Identifiers
Citations and references
Cited by 40 references