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Wavelength Intercomparison of Laser Radiations Using Servo-Lock Interferometry

  • W. R. C. Rowley
  • K. C. Shotton
  • P. T. Woods

Abstract

The general level of accuracy in wavelength intercomparison has improved steadily over the last twenty years, largely as a result of the development of frequency stabilized lasers. In 1957, five laboratories reported intercomparisons of the wavelengths of cadmium and krypton-86 radiations (1), which were in mutual agreement within a scatter of ± 3 parts in 108. By 1973, the measurement techniques had improved such that six reporting laboratories (2) agreed to ± 2 parts in 109 on the wavelength value of the iodine-stabilized helium-neon laser radiation at 633 nm with respect to the krypton-86 primary standard. The reproducibilities of lasers stabilized by saturated absorption techniques are, however, far in advance of these figures. Such lasers have stimulated developments in interferometry to utilize their potential for measurement purposes, such as in the determination of those fundamental constants which are related to the length unit.

Keywords

Beat Frequency Path Difference Fundamental Constant Slave Laser Test Laser 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    Com.Consult.Définition Mètre,(Com.Int.Poids Mesures), 2nd Session, M15, (1957).Google Scholar
  2. 2.
    Com.Consult.Définition Mètre,(Com.Int.Poids Mesures), 5th Session, M15, (1973).Google Scholar
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    MIELENZ, K.D.,Proceedings of the conference on Precision Measurement and Fundamental Constants, held at Gaithersburg, Maryland, August 1970. Edited by D.N.Langenberg & B.N.Taylor, NBS Special Publication 343, 53, (1971).Google Scholar
  4. 4.
    BLANEY, T.G., et al, Nature, 251, 46, (1974).Google Scholar
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    Shotton, K.C. and Rowley, W.R.C., NPL Quantum Metrology Report No. 28, (1975).Google Scholar
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    ROWLEY, W.R.C., J. Phys. E., 8, 223, (1975).Google Scholar

Copyright information

© Springer Science+Business Media New York 1976

Authors and Affiliations

  • W. R. C. Rowley
    • 1
  • K. C. Shotton
    • 1
  • P. T. Woods
    • 1
  1. 1.National Physical LaboratoryTeddingtonEngland

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