Experimental research on depolarization property of layered biological tissues

In this paper, depolarization property of light propagating through layered biological tissues is investigated by experiment. Intrialipid suspensions of different concentrations are chosen as liquid model of layered biological tissues. An experimental setup was established to measure the polarization state of light emitting from the Intrialipid suspensions. Under different polarization angle, light distributions transmitting through intrialipid suspensions of different concentration and thickness are measured by a Beam Profiler. The gray images obtained by the Beam Profile are used to analyze the polarization property of light emitting from biological tissue. According to the results, the relation of depolarization degree of emitting light from intrialipid suspensions with emitting position, concentration and thickness of intrialipid suspensions are discussed comprehensively.