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This article is cited in 7 scientific papers (total in 7 papers)
Interferometry of radiation
Noise power spectral density of a fibre scattered-light interferometer with a semiconductor laser source
A. E. Alekseeva, V. T. Potapovb a IRE-Polus Research and Technology Association, Fryazino, Moscow Region
b Kotelnikov Institute of Radioengineering and Electronics, Fryazino Branch, Russian Academy of Sciences
Abstract:
Spectral characteristics of the noise intensity fluctuations at the output of a scattered-light interferometer, caused by phase fluctuations of semiconductor laser radiation are considered. This kind of noise is one of the main factors limiting sensitivity of interferometric sensors. For the first time, to our knowledge, the expression is obtained for the average noise power spectral density at the interferometer output versus the degree of a light source coherence and length of the scattering segment. Also, the approximate expressions are considered which determine the power spectral density in the low-frequency range (up to 200 kHz) and in the limiting case of extended scattering segments. The expression obtained for the noise power spectral density agrees with experimental normalised power spectra with a high accuracy.
Keywords:
scattered radiation, semiconductor laser, noise power spectral density, backscattered light interferometer.
Received: 12.03.2013 Revised: 18.06.2013
Citation:
A. E. Alekseev, V. T. Potapov, “Noise power spectral density of a fibre scattered-light interferometer with a semiconductor laser source”, Kvantovaya Elektronika, 43:10 (2013), 968–973 [Quantum Electron., 43:10 (2013), 968–973]
Linking options:
https://www.mathnet.ru/eng/qe15174 https://www.mathnet.ru/eng/qe/v43/i10/p968
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