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Applied Optics

Applied Optics


  • Vol. 38, Iss. 15 — May. 20, 1999
  • pp: 3387–3393

Interference of backscatter from two droplets in a focused continuous-wave CO2 Doppler lidar beam

Maurice A. Jarzembski and Vandana Srivastava  »View Author Affiliations

Applied Optics, Vol. 38, Issue 15, pp. 3387-3393 (1999)

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With a focused continuous-wave CO2 Doppler lidar at 9.1-µm wavelength, the superposition of backscatter from two ∼14.12-µm-diameter silicone oil droplets in the lidar beam produced interference that resulted in a single backscatter pulse from the two droplets with a distinct periodic structure. This interference is caused by the phase difference in backscatter from the two droplets while they are traversing the lidar beam at different speeds, and thus the droplet separation is not constant. The complete cycle of interference, with periodicity 2π, gives excellent agreement between measurements and lidar theory.

© 1999 Optical Society of America

OCIS Codes
(010.3640) Atmospheric and oceanic optics : Lidar
(030.0030) Coherence and statistical optics : Coherence and statistical optics
(260.3160) Physical optics : Interference
(280.3640) Remote sensing and sensors : Lidar
(290.1350) Scattering : Backscattering
(350.5030) Other areas of optics : Phase

Original Manuscript: October 15, 1998
Revised Manuscript: February 10, 1999
Published: May 20, 1999

Maurice A. Jarzembski and Vandana Srivastava, "Interference of backscatter from two droplets in a focused continuous-wave CO2 Doppler lidar beam," Appl. Opt. 38, 3387-3393 (1999)

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