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Laser applications and other topics in quantum electronics
Parallax effects in laser Doppler spectroscopy
V. I. Smirnov Moscow Power Engineering Institute (Technical University)
Abstract:
Parallax effects in laser Doppler spectroscopy, associated with the variation of the scattering angle during motion of a particle through the probed volume, were investigated by a numerical simulation method based on the Mie scattering theory. It was found that, in general, the shifts of the spectral profile parameters (the average frequency, broadening, asymmetry, and kurtosis) become significant as the parallax number Nψα=(2/π)ψα (ψ is the angular size of the probed volume, α = πd/λ is the relative particle diameter) increases. The anomalous ranges of the parameters of the particle and of the optical system, in which marked distortions (such as the polymodal nature and the splitting of the spectral profile) are observed even for a low parallax number (Nψα ≪ 1), were discovered.
Received: 08.06.1999
Citation:
V. I. Smirnov, “Parallax effects in laser Doppler spectroscopy”, Kvantovaya Elektronika, 29:3 (1999), 253–257 [Quantum Electron., 29:12 (1999), 1091–1095]
Linking options:
https://www.mathnet.ru/eng/qe1637 https://www.mathnet.ru/eng/qe/v29/i3/p253
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Abstract page: | 114 | Full-text PDF : | 56 | First page: | 1 |
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