Highly accurate laser wavelength meter based on Doppler effect |
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Authors: | M Wakim L Chassagne Y Alayli |
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Institution: | a LIS Versailles, Department of physics, University of Versailles, 45 Avenue des Etats-Unis, 78035 Versailles, France b LNE-INM, 292 rue Saint-Martin, 75013 Paris, France |
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Abstract: | We have built an accurate wavelength meter based on a Michelson interferometer characterized by a high stability velocity moving system. The unknown wavelength is determined from the Doppler frequency shifts of the output beams of the Michelson interferometer. The reference laser is a frequency stabilized helium-neon laser. A counting resolution of 2.6 × 10−9 for an integration time of 30 s has been obtained. The apparatus has been used to determine the wavelength of a second frequency stabilized helium-neon laser and the result has been compared to those given by two different methods: frequency beating in regards to the national reference and using a commercially available scanning-Michelson wavemeter. Taking into account the statistical errors, we achieved a relative accuracy on the unknown wavelength of 6.4 × 10−8 at 1σ. |
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Keywords: | 42 60 &minus v 06 30 &minus k 42 87 Bg |
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