Compact and robust linear Stokes polarization camera

Abstract

Abstract. We present novel applications of Bossa Nova Technologies Linear Stokes polarization camera. The SALSA camera is able to perform live measurement of Linear Stokes parameters, usual polarization parameters (Degree Of Linear Polarization and Angle Of Polarization) and other polarization based parameters (polarized image, depolarized image, virtual polarizer, polarization difference). First a brief description of the SALSA camera and its calibration is given. Then we present and discuss several results of target detection and contrast enhancement experiments. We will also introduce a novel polarization based metrological method of 3D shape measurement for in-line control of optical surfaces and control of highly aspheric optical surfaces. The architecture of the hardware and calibration results is presented. A new algorithm based on polarization imaging leading to the construction of the gradient field is described. Finally experimental results and observations as well as possible further steps are discussed.

Full Stokes polarimetric imaging using a single ferroelectric liquid crystal device

“…This means that actually, with this kind of LC cell, decoupling the fast-axis orientation from the retardance remains difficult. The alternative consists of using two LC cells, as Gandorfer 9 and Vedel et al, 17 but we wanted to avoid this solution, whose performance in terms of CN are not reported in previously cited references. In the present configuration, with two pairs of driving voltages instead of one during the characterization process, the nonlinear timevariant behavior of the modulator appears clear and further work shall be performed from the initial characterization.…”

Diatomic Metasurface for Efficient Six‐Channel Modulation of Jones Matrix

“…The number of controllable channels represents the degree of freedom and the ability in regulating the electromagnetic wave. It is of great interest to multiplex different components of the Jones matrix for versatile applications, such as polarization-switchable imaging, [1,2] optical information encoding, [3] and so forth. However, the full exploitation of the controllable channels of Jones matrix using conventional optical elements still remains elusive.…”

Error analysis of FLC polarization imager in full polarization state with wide spectrum

“…Vedel et al at Bossa Nova Technologies developed an FLC-based line polarization camera and performed pseudo-color imaging based on the line polarization information and polarization angle information obtained from polarization imaging, respectively [10] . The following year the team developed FLC-based full polarization imaging camera and performed indoor and outdoor measurements, and performed not only full polarization and polarization angle pseudocolor imaging but also polarization ellipsometry pseudocolor imaging [11] .…”