Measuring the gain dynamics in a conjugated polymer film

Details Measuring the gain dynamics in a conjugated polymer film Measuring the gain dynamics in a conjugated polymer film

2004-02-04

arxiv.org/abs/physics/0402017v1

Physics

Chemical Physics

5 pages, 4 figures

Scientific paper

We present a simple method for measuring the gain decay time in a conjugated polymer film by optically exciting the film with two mutually delayed ultrashort pump pulses. When the pump is set at such a power level that amplified spontaneous emission marginally develops along the polymer waveguide, the total output emitted from its edge decays exponentially as a function of the interpulse delay. The corresponding decay time represents the decay time of the gain of the polymer material.

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