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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 26 — Sep. 10, 2011
  • pp: 5085–5092

Measurements of laser phase fluctuations induced by atmospheric turbulence over 2 km and 17.5 km distances

Kevin D. Ridley  »View Author Affiliations

Applied Optics, Vol. 50, Issue 26, pp. 5085-5092 (2011)

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A laser heterodyne system was used to measure the phase fluctuations imposed on a 1.5 μm wavelength laser beam when double-passed over long atmospheric paths. Two distances were used: 2 and 17.5 km . Results are given for intensity scintillation, phase fluctuation time series and spectra, and phase structure function. The results are found to agree well with theory: the spectrum of phase fluctuations follows the 8 / 3 power law predicted for Kolmogorov turbulence over 3 orders of magnitude in frequency. The methods reported here could be used to investigate large-scale temperature variations in the atmosphere.

© 2011 Optical Society of America

OCIS Codes
(010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
(040.2840) Detectors : Heterodyne
(140.0140) Lasers and laser optics : Lasers and laser optics
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(290.5930) Scattering : Scintillation

ToC Category:
Atmospheric and Oceanic Optics

Original Manuscript: March 29, 2011
Revised Manuscript: July 21, 2011
Manuscript Accepted: July 23, 2011
Published: September 6, 2011

Kevin D. Ridley, "Measurements of laser phase fluctuations induced by atmospheric turbulence over 2 kmand 17.5 km distances," Appl. Opt. 50, 5085-5092 (2011)

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