Ritty J, Nedumpara; Dr. Radhakrishnan, P(Cochin University of Science and Technology, February , 2007)
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Abstract:
Observing the wide possibilities of fluorescent dyes, an exhaustive investigation is
done in laser dyes mainly focusing on Coumarin 540 which has a very strong
emission in the green region. The photophysics of the dye is studied in detail in a good
number of solvent environments. The results of the amplified spontaneous emission
and lasing behaviour in both dye solution and different polymer solid state matrices
and the ptotostability of the these matrices are investigated using the photoacoustic technique and the same are also included in this thesis. The energy transfer behaviour
in dye mixtures which could be utilized for laser studies and bio-analysis are also
presented. The nonlinear characterization of Coumarin540 forms the last part of the
experimental investigations presented in the thesis.
Description:
International School of Photonics,
Cochin University of Science and Technology