Melanin effect on light beam intensity distribution in skin as a function of wavelength and depth from 200 to 1000 nm using Monte Carlo simulation

Light beam propagation inside biological tissue, is crucial for many fields. Giving that, we had investigated the effect of melanin, on light propagation inside different type of tissue. We had constructed phantoms that approximates a real tissue and mimic its reaction to light. The skin model of seven layers takes into consideration the volume fractions and optical properties of blood, water, and melanin content. We developed a Monte Carlo simulation to investigate the intensity distribution inside tissues of a light beam. The study is done for different Fitzpatrick skin types. We provide the intensity distribution and the penetration depth in the 200–1000 nm wavelength range.