ITERATIVE METHOD TO OBTAIN RAMAN SPECTRA OF ORGANIC DYES BY THEIR CHAOTIC GENERATION IN MULTIPLE-SCATTERING MEDIA
Abstract
An iterative method is developed to obtain the vibrational spectrum of laser organic dyes from the spectra of their secondary radiation which manifests itself in multiply scattering media as a coupled process of chaotic generation (CG) and stimulated Raman scattering (SRS). The developed method significantly increases the detection capabilities of weak Raman lines due to the batch processing of a set of experimental SRS-CG spectra, which makes it possible to optimize decomposition of these spectra and averaging of the vibrational spectra obtained from the set of experimental SRS-CG spectra. The method was tested on the spectra of an SRS-CG laser dye of pyromete 597 in a vesicular film. The results obtained are in good agreement with the Raman spectra calculated by the Hartree-Fock method.
Keywords
хаотическая генерация,
вынужденное комбинационное рассеяние (ВКР),
органические красители,
многократно рассеивающая среда,
колебательный спектр,
итеративный метод,
пирометен 597,
random lasing,
stimulated Raman scattering,
organic dyes,
multiple scattering media,
vibrational spectrum,
iterative method,
pyrromethen pm597
About the Authors
V. P. Yashchuk
Taras Shevchenko National University of Kyiv
Russian Federation
Russian Federation
A. A. Sukhariev
Taras Shevchenko National University of Kyiv
Russian Federation
Russian Federation
A. P. Smaliuk
Taras Shevchenko National University of Kyiv
Russian Federation
Russian Federation
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Review
For citations:
Yashchuk V.P., Sukhariev A.A., Smaliuk A.P. ITERATIVE METHOD TO OBTAIN RAMAN SPECTRA OF ORGANIC DYES BY THEIR CHAOTIC GENERATION IN MULTIPLE-SCATTERING MEDIA. Zhurnal Prikladnoii Spektroskopii. 2018;85(1):49-54. (In Russ.)
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