Photophysical and laser characteristics of pyrromethene 567 dye: Experimental and theoretical studies

Jagtap, K.; Maity, D.; Ray, A.; Dasgupta, K.; Ghosh, S.
November 2010
Pramana: Journal of Physics;Nov2010, Vol. 75 Issue 5, p985
Academic Journal
Narrow-band laser performance of alcohol solutions of pyrromethene 567 (PM567) and rhodamine 6G (RH6G) dye was investigated using a home-made GIG-configured dye laser, excited by the second-harmonic radiation (at 532 nm) of a pulsed Nd:YAG laser. Higher laser efficiency was observed with PM567 dye (∼23% peak) in comparison to the commonly used RH6G dye (16.5%), in spite of much lower fluorescence quantum efficiency of the PM567 (0.83) vis-à-vis RH6G (0.98) dye solutions in ethanol. First principle-based electronic structure calculations were performed on PM567 dye in the ground ( S) and excited states ( S) using density functional theory to elucidate the structure and photophysical properties of the dye.


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