CHODIN-a computer code to simulate coherent light scattering dynamics on biological suspensions

When coherent light passes through a transparent fluid having scattering centers (SC) in suspension the result of the far field interference is a "speckled" image. In suspension the SCs have a complex sediment and Brownian motion. Consequently the biospeckle image is not static but presents time fluctuations. A computer code to simulate the dynamics of the coherent light scattering on biological suspensions was written and used to investigate typical biological suspensions like erythrocytes (RBC) and milk in deionized water. The calculated far field intensity variation was analyzed with the autocorrelation function. Practical application are suggested based on the simulation results.