Multiple light scattering can be suppressed by slightly tilting two single-mode fibers viewing the same sample volume. The cross-correlation function of the two signals shows more or less contributions from single scattering, depending on the tilt angle. We show experimental results for polystyrene spheres at a scattering angle of 90°. The measured size, intercept, and second cumulant for different tilt angles demonstrate the practicality of this technique. Both polarization components show multiple-scattering contributions, but only the parallel component contains single scattering.
© 1997 Optical Society of America
Ulf Nobbmann, Stacy W. Jones, and Bruce J. Ackerson, "Multiple-scattering suppression: cross correlation with tilted single-mode fibers," Appl. Opt. 36, 7571-7576 (1997)