Polarimetric characterization of light and media

Issue		Eur. Phys. J. Appl. Phys. Volume 40, Number 1, October 2007


Page(s)		1 - 47
Section		Review Article
DOI		10.1051/epjap:2007153
Published online		03 November 2007

Eur. Phys. J. Appl. Phys. 40, 1-47 (2007)
DOI: 10.1051/epjap:2007153

Physical quantities involved in polarimetric phenomena

J.J. Gil

Universidad de Zaragoza, ICE c/ Pedro Cerbuna 12, 50009 Zaragoza, Spain

ppgil@unizar.es

(Received: 11 June 2007 / Received in final form: 16 July 2007 / Accepted: 26 July 2007 / Published online: 3 November 2007)

Abstract
An objective analysis is carried out of the matricial models representing the polarimetric properties of light and material media leading to the identification and definition of their corresponding physical quantities, using the concept of the coherency matrix. For light, cases of homogeneous and inhomogeneous wavefront are analyzed, and a model for 3D polarimetric purity is constructed. For linear passive material media, a general model is developed on the basis that any physically realizable linear transformation of Stokes vectors is equivalent to an ensemble average of passive, deterministic nondepolarizing transformations. Through this framework, the relevant physical quantities, including indices of polarimetric purity, are identified and decoupled. Some decompositions of the whole system into a set of well-defined components are considered, as well as techniques for isolating the unknown components by means of new procedures for subtracting coherency matrices. These results and methods constitute a powerful tool for analyzing and exploiting experimental and industrial polarimetry. Some particular application examples are indicated.

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