Stable ‘gap’ in absorption spectra of solid solutions of organic molecules by laser irradiation

A narrow (Δ≈0.7 cm −1), long-lived (τ≈some hours) ‘gap’ in broad-band (Δ≈200 cm −1) absorption spectra of perylene and 9-aminoacridine in ethanol at 4.2 K has been discovered and investigated. The ‘gap’ is formed by laser irradiation as a result of a photoprocess leading to the ‘burning out’ of impu...

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Bibliographic Details
Published in:Optics communications 1974-01, Vol.12 (2), p.191-193
Main Authors: Kharlamov, B.M., Personov, R.I., Bykovskaya, L.A.
Format: Article
Language:English
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Summary:A narrow (Δ≈0.7 cm −1), long-lived (τ≈some hours) ‘gap’ in broad-band (Δ≈200 cm −1) absorption spectra of perylene and 9-aminoacridine in ethanol at 4.2 K has been discovered and investigated. The ‘gap’ is formed by laser irradiation as a result of a photoprocess leading to the ‘burning out’ of impurity centres absorbing laser irradiation resonantly. The homogeneous width of the 0-0 absorption line of the separate impurity centre (Δ ε≈0.4 cm −1) has been assessed by the ‘gap’ width.
ISSN:0030-4018
1873-0310
DOI:10.1016/0030-4018(74)90388-5