Random laser as a potential tool for the determination of the scattering coefficient
Martin Hohmann, Moritz Späth, Dongqin Ni, Dominique Dörner, Benjamin Lengenfelder, Florian Klämpfl, Michael Schmidt
Abstract
The determination of the optical properties of a turbid medium is a major topic in the field of optics. Generally, they comprise the parameters µ a , µ s , g and n . There is, however, a lack of techniques for the direct determination of the scattering coefficient µ s . This study, therefore, proposes the random laser (RL) as a tool to directly measure µ s - and not <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:msubsup> <mml:mi>μ</mml:mi> <mml:mi>s</mml:mi> <mml:mo>′</mml:mo> </mml:msubsup> </mml:math> . Evidence is found that it is possible to determine µ s in the diffusive regime by means of the RL. Based on these findings, a local model of the RL is developed and presented in this study.