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Applied Optics

Applied Optics


  • Vol. 27, Iss. 3 — Feb. 1, 1988
  • pp: 445–446

Stabilized laser for long base-line interferometry

Hadley O. Johnson, Frank Wyatt, and Mark A. Zumberge  »View Author Affiliations

Applied Optics, Vol. 27, Issue 3, pp. 445-446 (1988)

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No abstract available.

Original Manuscript: October 30, 1987
Published: February 1, 1988

Hadley O. Johnson, Frank Wyatt, and Mark A. Zumberge, "Stabilized laser for long base-line interferometry," Appl. Opt. 27, 445-446 (1988)

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  1. D. C. Agnew, “Strainmeters and Tiltmeters,” Rev. Geophys. 24, 579 (1986). [CrossRef]
  2. J. Berger, R. H. Lovberg, “Earth Strain Measurements with a Laser Interferometer,” Science 170, 296 (1970). [CrossRef] [PubMed]
  3. Channel Industries, 839 Ward Drive, Santa Barbara, CA 93111 (model C5400: 3 in. long, 1.625 in. in diameter, and with 0.125-in. wall thickness; strain coefficient 4.24 × 10−8∊/V).
  4. T. Baer, F. V. Kowalski, J. L. Hall, “Frequency Stabilization of a 0.633-μm He–Ne Longitudinal Zeeman Laser,” Appl. Opt. 19, 3173 (1980). [CrossRef] [PubMed]
  5. Laser frequency shift as a function of piezovoltage V and heater current A is given byΔf(V,A)=−25GHz−(0.0094GHz/V)ΔV−(64GHz/A)ΔA,where the constant term represents the frequency offset at nominal operating conditions of 4-mA plasma tube current and 100-mA heater current (into 50 Ω). The expression for longitudinal stress on the laser plasma tube isΔσ(V,A)=−3.8MPa+(0.0021MPa/V)ΔV+(2.9MPa/A)ΔA.These expressions are not simply related because the heater current affects both the piezo and plasma tube, resulting in very little stress on the tube for a large change in frequency.
  6. Basicon Inc., 11895 NW Cornell Road, Portland, OR 97229.

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