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The compensation of the noise due to angular oscillations of the laser beam in the Precision Laser Inclinometer

Azaryan, N. (Dubna, JINR) ; Budagov, J. (Dubna, JINR) ; Lyablin, M. (Dubna, JINR) ; Pluzhnikov, A. (Dubna, JINR) ; Di Girolamo, B. (CERN) ; Gayde, J.Ch. (CERN) ; Mergelkuhl, D. (CERN)

Published in: Phys.Part.Nucl.Lett.
Year: 2017
Vol.: 14    Num./Issue: 6
Page No: 930-938
Pages: 9
Year: 2017-11-25 published

Abstract: An experimental method for the compensation of the noise originated by the laser ray angular oscillations was proposed and experimentally proved for the Precision Laser Inclinometer (PLI). The PLI noise spectral density was reduced by factor 30× and reached 10$^{–8}$ rad/Hz$^{1/2}$ level at the frequency of 5 × 10$^{–5}$ Hz. The angular noise of a laser ray leaving the one-mode optical fiber in the vacuum and in stabilized temperature conditions has been measured. The amplitude of the oscillations for one-day observation reached 0.46 μrad.

Note: *Brief entry*

Total numbers of views: 109
Numbers of unique views: 64
DOI: 10.1134/S154747711706022X
 Record created 2018-01-09, last modified 2018-01-09

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