Chinese Journal of Lasers, Volume. 33, Issue 11, 1477(2006)
Femtosecond Laser Speckle Cross-Correlation Technique
Displacement of the scattering media from speckle information can be obtained. So a novel femtosecond laser speckle technique was proposed. For measuring the displacement of a scattering object by using two images which are taken before and after the object moved. Since the two images are recorded by a charge coupled device (CCD) camera and stored on separate frames in computer, it is possible to use a cross-correlation algorithm to determine the displacement field in real-time. In experiment, displacement of the scattering media is in agreement with the result obtained by cross-correlation algorithm. It is shown that femtosecond laser speckle cross-correlation technique should be a useful for measuring the movement of a scattering object under femtosecond laser illumination.
Get Citation
Copy Citation Text
[in Chinese], [in Chinese]. Femtosecond Laser Speckle Cross-Correlation Technique[J]. Chinese Journal of Lasers, 2006, 33(11): 1477