Quantum interference in organic solid.
We demonstrate high contrast quantum interference between one-photon and three-photon absorption pathways in an organic solid at room temperature. Illumination of a thin polymer film activated with fluorescing dendrimer chromophores of large three photon absorption cross section with two simultaneous femtosecond pulses at near-IR frequency omega and its third harmonic UV frequency 3omega results in a spatial interference fringe pattern observable by eye.
Rebane
Aleksander
A
Christensson
Niklas
N
Drobizhev
Mikhail
M
Stepanenko
Yuriy
Y
Spangler
Charles
C