ROTHBERG, S., 2006. Numerical simulation of speckle noise in laser vibrometry. Applied Optics, 45 (19), pp. 4523-4533.
This paper considers the fundamental mechanism by which speckle noise is generated in Laser
Vibrometry before describing a new numerical simulation for prediction of speckle noise level in
a real measurement. Factors within the simulation include rate of change of phase within
individual speckle transitions, low pass filtering to match the frequency range of experimental
data with which comparison is to be made, a track-and-hold facility for periods of low signal
amplitude and wavefront curvature effects. The simulation data provides real insight into the
phase and amplitude modulation of the Doppler signal and good agreement is found in the final
comparison with experimental data from a measurement on a rotating target.
This paper was published in the journal, Applied Optics, and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/abstract.cfm?URI=ao-45-19-4523 Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.