Skip to main content

Detection of the Increment of an Instantaneous Phase in a Long-Base Laser Meter of Small Vibrations


A phase meter for processing signals of a laser meter of small displacements and vibrations at long base distances is described. Vibrations of objects are transformed into small increments of a signal phase at an RF carrier, which are detected by the phase meter and are outputted as signals proportional to microvibrations in the acoustic range. At a given carrier frequency f c = 10.7 MHz, vibrations are detected within a band Δf = 3 kHz. Such vibrations produce phase fluctuations of ≤Δϕ ≈ 10–42π, which correspond to magnitudes of ∼1 nm for a laser wavelength λ ≈ 10 μm.

This is a preview of subscription content, access via your institution.


  1. Aksenov, V.A., Il'yanovich, Yu.N., and Fomin, Yu.N., RF Patent 2138013, 1997, Kl.G01B 9/00.

  2. Gol'dshtein, S.Sh., Mukimov, K.M., Sigal, G.P., et al., Prib. Tekh. Eksp., 1922, no. 6, p. 133.

    Google Scholar 

  3. Franks, L., Signals Theory, Englewood Cliffs, N.J.: Prentice-Hall, 1969. Translated under the title Teoriya signalov, Moscow: Sovetskoe Radio, 1974.

    Google Scholar 

  4. Max, J., Methodes et Techniques de Traitement du Signal et Applications aux Mesures Physigues, New York: Masson, 1981. Translated under the title Metody i tekhnika obrabotki signalov pri fizicheskikh izmereniyakh, Moscow: Mir, 1983, vols. 1, 2.

    Google Scholar 

  5. Vakman, D.E., Radiotekh. Elektron. (Moscow), 1979, no. 5, p. 982.

    Google Scholar 

Download references

Author information

Authors and Affiliations


Rights and permissions

Reprints and Permissions

About this article

Cite this article

Vasil'ev, V.A., Zhmud', V.A., Il'yanovich, Y.N. et al. Detection of the Increment of an Instantaneous Phase in a Long-Base Laser Meter of Small Vibrations. Instruments and Experimental Techniques 45, 526–529 (2002).

Download citation

  • Issue Date:

  • DOI:


  • Physical Chemistry
  • Carrier Frequency
  • Laser Wavelength
  • Small Displacement
  • Signal Phase