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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 17, Iss. 10 — Oct. 1, 2000
  • pp: 1840–1845

Spectral analysis of vibrational harmonic motion by use of a continuous-wave CO2 Doppler lidar

Maurice A. Jarzembski and Vandana Srivastava  »View Author Affiliations


JOSA A, Vol. 17, Issue 10, pp. 1840-1845 (2000)
http://dx.doi.org/10.1364/JOSAA.17.001840


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Abstract

Vibrational motion of a harmonic oscillator was investigated with a focused continuous-wave (cw) CO<sub>2</sub> Doppler lidar at 9.1-μm wavelength. A continuum of frequencies along with many discrete, equally spaced, resonant frequency modes was observed. The frequency modes are similar in structure to the oscillatory longitudinal modes of a laser cavity and arise because of interference of the natural resonant frequency of the oscillator with specific frequencies within the continuum. Each consecutive resonant frequency mode occurred for a movement of the oscillator much less than the wavelength of incident lidar radiation. For vigorous vibration of the oscillator, the observed spectra may be indicating nonlinear motion.

© 2000 Optical Society of America

OCIS Codes
(030.1640) Coherence and statistical optics : Coherence
(030.4070) Coherence and statistical optics : Modes
(120.7280) Instrumentation, measurement, and metrology : Vibration analysis
(260.3160) Physical optics : Interference
(280.3340) Remote sensing and sensors : Laser Doppler velocimetry
(280.3640) Remote sensing and sensors : Lidar

Citation
Maurice A. Jarzembski and Vandana Srivastava, "Spectral analysis of vibrational harmonic motion by use of a continuous-wave CO2 Doppler lidar," J. Opt. Soc. Am. A 17, 1840-1845 (2000)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-17-10-1840


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References

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