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An ultrafast spectroscopy study of stimulated emission in poly (9,9-dioctylfluorene) films and microcavities
Journal article   Peer reviewed

An ultrafast spectroscopy study of stimulated emission in poly (9,9-dioctylfluorene) films and microcavities

T Virgili, D G Lidzey, DDC Bradley, G Cerullo, S Stagira and S De Silvestri
Applied physics letters, Vol.74(19), pp.2767-2769
10/05/1999
DOI: https://doi.org/10.1063/1.124008

Abstract

Physical Sciences Physics Physics, Applied Science & Technology
We report measurements of stimulated emission in poly(9,9-dioctylfluorene). We find a gain coefficient of 1.2X10(4) cm(-1) for 100 nm-thick films at an excitation energy density of 9.9 mJ/cm(2). Using ultrafast pump-probe measurements, we have studied the effect of cavity optical confinement. A strong shift of the cavity resonance due to nonlinear refraction is observed. (C) 1999 American Institute of Physics. [S0003-6951(99)03219-2].

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