Investigation of shaped laser beam propagation in turbid media

In this study, propagation of Gaussian, Bessel and Airy beams in turbid media was investigated experimentally. In experiments, we used variable concentration intralipid emulsion as turbid media. Intralipid emulsion samples diluted in distilled water at different densities were prepared. The sample was placed in a quartz cuvette with 10 mm optical path. We investigated change of intensity and beam profile with varying density. We used a He-Ne laser as a coherent light source. Bessel beams were produced by a conical lens (axicon). In order to generate Airy beams, we used a special optical element presented recently. For Gaussian beam experiment, the laser beam was directly focused at sample exit. All beams have approximately same FWHM focal spot diameter at the end of the sample. 10X magnification microscope was used to image exit beam profile.