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1980

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December

  

New apparatus and measurement methods


Interferometers for studying small vibrations

Experimental methods for decreasing the mechanical noise level in interferometers used for detecting small vibrations are examined. The increase in the power of sources of coherent radiation has led to a situation in which the sensitivity of interferometers is, to a large extent, determined by mechanical fluctuations and not by the Poisson fluctuations in the light flux. Techniques have by now been developed that significantly decrease the level of mechanical noise. Similar techniques permit interferometers to be used in the presence of quite intense microseismic noise.

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Fulltext is also available at DOI: 10.1070/PU1980v023n12ABEH005078
PACS: 07.60.Ly
DOI: 10.1070/PU1980v023n12ABEH005078
URL: https://ufn.ru/en/articles/1980/12/d/
Citation: Shmal’gauzen V I "Interferometers for studying small vibrations" Sov. Phys. Usp. 23 858–861 (1980)
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Оригинал: Шмальгаузен В И «Интерферометры для изучения малых колебаний» УФН 132 679–684 (1980); DOI: 10.3367/UFNr.0132.198012d.0679

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