The effect of fine structure appearance in laser-excited fluorescence spectra of organic compounds in solid solutions

Some experiments with excitation of the perylene fluorescence at 4.2°K in the region of the 0-0 transition by a cadmium laser ( λ=4415.6 A ̊ ) were made. It was found that with the laser excitation, narrow lines (≈1 cm -1 appear instead of broad bands (≈200 cm -1) in the fluorescence spectrum of bot...

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Bibliographic Details
Published in:Optics communications 1972, Vol.6 (2), p.169-173
Main Authors: Personov, R.I., Al'Shits, E.I., Bykovskaya, L.A.
Format: Article
Language:English
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Summary:Some experiments with excitation of the perylene fluorescence at 4.2°K in the region of the 0-0 transition by a cadmium laser ( λ=4415.6 A ̊ ) were made. It was found that with the laser excitation, narrow lines (≈1 cm -1 appear instead of broad bands (≈200 cm -1) in the fluorescence spectrum of both the crystalline and glass-like solid solutions. A similar effect was observed with some other molecules. A rapid decrease of the intensity of the narrow lines with increase of temperature was found. A possible model of the formation of the wide spectral bands suggested by the new results obtained is discussed.
ISSN:0030-4018
1873-0310
DOI:10.1016/0030-4018(72)90220-9