Wavelength-diverse polarization modulators for Stokes polarimetry.

@article{Tomczyk2010WavelengthdiversePM,
  title={Wavelength-diverse polarization modulators for Stokes polarimetry.},
  author={Steven Tomczyk and Roberto Casini and A. G. de Wijn and Peter G. Nelson},
  journal={Applied optics},
  year={2010},
  volume={49 18},
  pages={
          3580-6
        }
}
Information about the three-dimensional structure of solar magnetic fields is encoded in the polarized spectra of solar radiation by a host of physical processes. To extract this information, solar spectra must be obtained in a variety of magnetically sensitive spectral lines at high spatial, spectral, and temporal resolution with high precision. The need to observe many different spectral lines drives the development of Stokes polarimeters with a high degree of wavelength diversity. We present… Expand
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References

SHOWING 1-10 OF 34 REFERENCES
A new spectro-polarimeter for solar prominence and filament magnetic field measurements
We are constructing a spectro-polarimeter using the 40-cm coronagraph at the Evans Solar Facility of the National Solar Observatory in Sunspot, NM for the purpose of measuring the vector magneticExpand
The second solar spectrum. A new window for diagnostics of the Sun
The Sun's radiation becomes linearly polarized by coherent scattering processes in the solar atmosphere. With a novel polarimetry system that achieves a precision of 10 5 in the degree ofExpand
Polarimeter with two ferroelectric liquid-crystal modulators attached to the Yunnan solar tower.
A polarimeter to be mounted on the Yunnan solar tower is described. It features the ability to simultaneously measure the magnetic fields of the solar photosphere and chromosphere by analyzing theExpand
The Diffraction Limited Spectro-Polarimeter
The Diffraction Limited Spectro-Polarimeter (DLSP) is a collaboration between the National Solar Observatory (NSO) and the High Altitude Observatory (HAO) to provide a stable instrument for precisionExpand
Rotating waveplates as polarization modulators for Stokes polarimetry of the sun: evaluation of seeing-induced crosstalk errors.
  • B. Lites
  • Physics, Medicine
  • Applied optics
  • 1987
TLDR
It is shown that rotating waveplates offer an acceptable alternative for measurements of absorption line polarization of features observed on the solar disk, provided the detection can be carried out at video frame rates or faster. Expand
Spinor: Visible and Infrared Spectro-Polarimetry at the National Solar Observatory
The Spectro-Polarimeter for Infrared and Optical Regions (SPINOR) is a new spectro-polarimeter that will serve as a facility instrument for the Dunn Solar Telescope at the National Solar Observatory.Expand
An Instrument to Measure Coronal Emission Line Polarization
Abstract We have constructed an instrument to measure the polarization of light emitted by the solar corona in order to constrain the strength and orientation of coronal magnetic fields. We call thisExpand
Hyperfine Structure as a Diagnostic of Solar Magnetic Fields
We propose the use of the Zeeman effect of the hyperfine structure (HFS) as a diagnostic of solar photospheric magnetic fields. The HFS induces unique signatures in the polarized spectra ofExpand
Optimum modulation and demodulation matrices for solar polarimetry.
TLDR
It is demonstrated, based on the definition of polarimetric efficiency, that the maximum efficiencies of an ideal polarimeter are unity for Stokes I and for (Q( 2) + U(2) + V(2))(1/2) and that this occurs if O(T)O is diagonal. Expand
...
1
2
3
4
...