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This article is cited in 3 scientific papers (total in 3 papers)
SPECKLE SPECTROSCOPY
Speckle spectroscopy of fluorescent randomly inhomogeneous media
D. A. Zimnyakovab, I. A. Asharchukc, S. A. Yuvchenkoa, A. P. Sviridovc a Saratov State Technical University
b Institute of Precision Mechanics and Control, Russian Academy of Sciences, Saratov
c Institute of Cristallography Russian Academy of Sciences, Moscow
Abstract:
We propose a coherence optical method for probing fluorescent randomly inhomogeneous media based on the statistical analysis of spatial fluctuations of spectrally selected fluorescence radiation. We develop a phenomenological model that interrelates the flicker index of the spatial distribution of the fluorescence intensity at a fixed wavelength and the mean path difference of partial components of the fluorescence radiation field in the probed medium. The results of experimental approbation of the developed method using the layers of densely packed silicon dioxide particles saturated with the aqueous rhodamine 6G solution with a high concentration of the dye are presented. The experimentally observed significant decrease in the flicker index under the wavelength tuning from the edges of the fluorescence spectrum towards it central part is presumably a manifestation of spectrally dependent negative absorption in the medium.
Keywords:
fluorescence, randomly inhomogeneous medium, narrow-band filtering, coherence, speckles.
Received: 08.08.2016 Revised: 07.10.2016
Citation:
D. A. Zimnyakov, I. A. Asharchuk, S. A. Yuvchenko, A. P. Sviridov, “Speckle spectroscopy of fluorescent randomly inhomogeneous media”, Kvantovaya Elektronika, 46:11 (2016), 1047–1054 [Quantum Electron., 46:11 (2016), 1047–1054]
Linking options:
https://www.mathnet.ru/eng/qe16501 https://www.mathnet.ru/eng/qe/v46/i11/p1047
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Abstract page: | 400 | Full-text PDF : | 88 | References: | 32 | First page: | 15 |
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