The Spectral Analysis of Dynamic Laser Speckle Patterns Generated by Brownian Particle Suspensions: A Stroboscopic Effect Based Filtering Technique

<table>(a) The frame-wise fluctuation of the 400-pixel-averaged intensity in the ROI located at the field center for the 2.08 <i>μ</i>m particles at two modulation frequencies: 10 Hz and 400 Hz. (b) The standard deviation in the frame-wise variance calculated using different numbers of frames. The solid lines are guides to the eyes.</table>

Advances in Optics

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Figure 3

Figure 3: The Spectral Analysis of Dynamic Laser Speckle Patterns Generated by Brownian Particle Suspensions: A Stroboscopic Effect Based Filtering Technique 

Figure 3 | The Spectral Analysis of Dynamic Laser Speckle Patterns Generated by Brownian Particle Suspensions: A Stroboscopic Effect Based Filtering Technique 