Time-resolved spectroscopy of "hot" luminescence as a method for investigation of picosecond relaxation in molecular systems

A. O. Aniyalg, P. M. Saari, T. B. Tamm, I. È. Timpmann, A. M. Freĭberg


Abstract: The example of perylene molecules in a frozen paraffin matrix was used in the first-ever observation of the time dependence of the intensity of vibronic lines in a luminescence spectrum, which was a direct manifestation of intramolecular relaxation in the S₁ state. Spreading of a picosecond signal in a highresolution monochromator was prevented in a new system with subtraction of dispersion, which ensured that the best attainable parameters (from the point of view of the indeterminacy principle) were achieved in timeresolved spectroscopy.

UDC: 621.375.826+535.372

PACS: 78.60.-b

Received: 25.06.1982

 English version: Soviet Journal of Quantum Electronics, 1982, 12:12, 1597–1601

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