Dynamic speckle bandwidth and characterization of vibration frequency and amplitude using a CO2 laser vibrometer

Richard S. Eng; Charles A. Freed; Charles L. Summers

doi:10.1117/12.157098

15 October 1993 Dynamic speckle bandwidth and characterization of vibration frequency and amplitude using a CO₂ laser vibrometer

Richard S. Eng, Charles A. Freed, Charles L. Summers

Author Affiliations +

Proceedings Volume 1936, Applied Laser Radar Technology; (1993) https://doi.org/10.1117/12.157098
Event: Optical Engineering and Photonics in Aerospace Sensing, 1993, Orlando, FL, United States

Abstract

The speckle bandwidth in a CO₂ laser radar return is measured by applying a tilt motion to a diffuse target which is also driven with a piston motion by a loudspeaker. The speckle bandwidth vs. tilt frequency is reported. The frequency and amplitude characteristics of a glint target undergoing piston motion only are also described.

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Richard S. Eng, Charles A. Freed, and Charles L. Summers "Dynamic speckle bandwidth and characterization of vibration frequency and amplitude using a CO₂ laser vibrometer", Proc. SPIE 1936, Applied Laser Radar Technology, (15 October 1993); https://doi.org/10.1117/12.157098

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