Energy Transfer Mechanism and Amplified Spontaneous Emission Characteristics of Dye Mixture Solutions

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Abstract
The excitation energy transfer mechanism in a dye laser system is discussed. The rate constants of the radiative and radiationless deactivation processes of the donor dye are estimated for two kinds of donor-acceptor dye mixture solutions. It is found that the suitable energy transfer mechanism depends on the characteristics of the excitation source and of the fluorescence of the donor dye. When a dye mixture solution is pumped by a short-pulse excitation source, the excitation energy is transferred most effectively by resonant transfer. Experimental results are also reported on the amplified spontaneous emission characteristics of dye mixture solutions.