Reconstruction of particle size distribution and optical constant based on time-resolved information

The accurate measurement of particle size distribution and optical constant is of great importance for the prediction of radiative transfer in participating media. In the present work, an improved firework algorithm was applied to estimate the particle size distribution and optical constant simultaneously. At different angles, the time-resolved transmittance of a one-dimensional slab irradiated by laser of different wavelengths was measured. Afterward, the particle size distribution and optical constant were retrieved using the improved firework algorithm. According to the test cases for three different types of particle size distribution functions, it can be concluded that the particle size distribution and optical constant can be retrieved accurately by the proposed improved firework algorithm with assistant of corresponding physical property measurement technique.