Polarization nephelometer: stability analysis of algorithm for calculation of light-scattering matrices

Sergey V. Romanov

doi:10.1117/12.246728

23 August 1996 Polarization nephelometer: stability analysis of algorithm for calculation of light-scattering matrices

Sergey V. Romanov

Proceedings Volume 2774, Design and Engineering of Optical Systems; (1996) https://doi.org/10.1117/12.246728
Event: Optical Instrumentation and Systems Design, 1996, Glasgow, United Kingdom

Abstract

Laser polarization nephelometer is used for measurement of light scattering matrix (LSM), known as Mueller matrix. The measurement method is based on the modulation of polarization state of incident and scattered light by rotation of some optical components. One can calculate the LSM elements via Fourier transformation of input signal by means of matrix of conversion C. Dimension of the matrix and values of it's elements depend on the ratio of rotation rates of the optical components. In the work nephelometer with rotating phase plates was considered. The scheme with motionless analyzer was taken into account as well as with the rotating one. This gives an opportunity to find several regimes, which allow to calculate the full LSM. For the regime 1:5 the dependence of condition number of matrix C versus the phase retardation of phase plates was investigated. Optimal parameters of devices were found by minimization. Dependencies of measurement errors versus the adjustment one were calculated by Monte-Carlo method for a set of matrices of different objects. The results allow to determine the error level for measurements of real objects.

Citation Download Citation

Sergey V. Romanov "Polarization nephelometer: stability analysis of algorithm for calculation of light-scattering matrices", Proc. SPIE 2774, Design and Engineering of Optical Systems, (23 August 1996); https://doi.org/10.1117/12.246728

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KEYWORDS

Optical components

Polarization

Light scattering

Matrices

Chemical elements

Modulation

Monte Carlo methods

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