Fluorescence due to excited state absorption in saturable absorbers

1 May 1970

journal article
Published by IOP Publishing in Journal of Physics D: Applied Physics

Vol. 3 (5) , 758-762
https://doi.org/10.1088/0022-3727/3/5/316

Abstract

Blue fluorescence has been observed from saturable absorbers excited by ruby laser light. The intensity dependence of this fluorescence showed that it was a result of excited-state absorption to the second single state. This intensity dependence also indicated the power density required to saturate the first excited singlet state for each dye. A similar fluorescence due to two photon absorption was observed in certain solvents.

Keywords

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