The authors present time-resolved studies of laser emission from an
organic microcavity filled with a guest-host composite of tris(8-hydroxy
quinoline aluminium and 4-(dicyanomethylene)-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran.
A line splitting of 0.18 THz between two perpendicularly polarized
lines is observed, resulting from an optical anisotropy in the distributed
Bragg reflectors. This particular behavior is attributed to oblique
columnar structures shaped by off-axial preparatory conditions. By
means of an upconversion setup an oscillation at 5.5 ps period time
and phase coupling of the modes are observed. A rate-equation-based
approach is utilized for modeling the temporal behavior.
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