OSA's Digital Library

Applied Optics

Applied Optics


  • Vol. 34, Iss. 31 — Nov. 1, 1995
  • pp: 7197–7201

Improvement of speckle statistics in double-wavelength superheterodyne interferometry

R. Dändliker, M. Geiser, C. Giunti, S. Zatti, and G. Margheri  »View Author Affiliations

Applied Optics, Vol. 34, Issue 31, pp. 7197-7201 (1995)

View Full Text Article

Enhanced HTML    Acrobat PDF (206 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



In this paper we analyze the probability density function of the superheterodyne signal obtained in a two-wavelength interferometer from the beat of a local oscillator laser beam with a speckled return beam from a rough target. Theoretical investigation shows that, by using an increased number of spatially separated detectors, one can improve noticeably the detection probability of the superheterodyne signal. Experimental results obtained with a four-quadrant detector are in good agreement with theory.

© 1995 Optical Society of America

Original Manuscript: October 31, 1994
Revised Manuscript: April 18, 1995
Published: November 1, 1995

R. Dändliker, M. Geiser, C. Giunti, S. Zatti, and G. Margheri, "Improvement of speckle statistics in double-wavelength superheterodyne interferometry," Appl. Opt. 34, 7197-7201 (1995)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. J. C. Wyant, “Holographic and moire techniques,” in Optical Shop Testing, D. Malacara, ed. (Wiley, New York, 1978), pp. 397–402.
  2. C. R. Tilford, “Analytical procedure for determining lengths from fractional fringes,” Appl. Opt. 16, 1857–1860 (1977). [CrossRef] [PubMed]
  3. J. C. Wyant, “Testing aspherics using two-wavelength holography,” Appl. Opt. 10, 2113–2118 (1971). [CrossRef] [PubMed]
  4. C. Polhemus, “Two-wavelength interferometry,” Appl. Opt. 12, 2071–2077 (1973). [CrossRef] [PubMed]
  5. A. F. Fercher, H. Z. Hu, U. Vry, “Rough surface interferometry with a two-wavelength heterodyne speckle interferometer,” Appl. Opt. 24, 2181–2188 (1985). [CrossRef] [PubMed]
  6. R. Dändliker, R. Thalmann, D. Prongué, “Two-wavelength laser interferometry using superheterodyne detection,” Opt. Lett. 13, 339–343 (1988). [CrossRef] [PubMed]
  7. J. H. Shapiro, “Correlation scales of laser speckle in heterodyne detection,” Appl. Opt. 24, 12, 1883–1888 (1985). [CrossRef]
  8. R. Thalmann, “Study and evaluation of a metrology concept for large structure in space,” ESA Report 220 EC 08/87, ESA contract SPM 6848/86/NL/JG (European Space Agency, Neuchatel, 1987).
  9. J. W. Goodman, “Statistical properties of laser speckles and related phenomena,” in Laser Speckle and Related Phenomena, J. C. Dainty, ed. (Springer-Verlag, New York, 1975), pp. 9–75. [CrossRef]
  10. A. F. Fercher, U. Vry, W. Werner, “Two wavelength speckle interferometry on rough surfaces using a mode hopping diode laser,” Opt. Lasers Eng. 11, 271–279 (1989). [CrossRef]
  11. P. Lutzmann, R. Ebert, “Speckle reduction in CO2 laser radar systems,” in CO2 Lasers and Applications II, H. Opower, ed., Proc. Soc. Photo-Opt. Instrum. Eng. 1276, 288–293 (1990).
  12. U. Vry, A. F. Fercher, “Higher-order statistical properties of speckle fields and their application to rough-surface interferometry,” J. Opt. Soc. Am. A 3, 988–1000 (1986). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited