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Title: Noise power spectral density of a fibre scattered-light interferometer with a semiconductor laser source

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. (interferometry of radiation)
Authors:
 [1] ;  [2]
  1. IRE-Polus Research and Technology Association, Fryazino, Moscow Region (Russian Federation)
  2. V.A.Kotel'nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Fryazino Branch, Fryazino, Moscow region (Russian Federation)
Publication Date:
OSTI Identifier:
22370652
Resource Type:
Journal Article
Resource Relation:
Journal Name: Quantum Electronics (Woodbury, N.Y.); Journal Volume: 43; Journal Issue: 10; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ACCURACY; APPROXIMATIONS; FIBERS; FLUCTUATIONS; INTERFEROMETERS; INTERFEROMETRY; KHZ RANGE; LIGHT SOURCES; NOISE; SEMICONDUCTOR LASERS; SENSITIVITY; SPECTRAL DENSITY