Concept of a Wavelength Tunable Solar Polarimetry

Details Concept of a Wavelength Tunable Solar Polarimetry Concept of a Wavelength Tunable Solar Polarimetry

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agusmsp43a..10k&link_type=abstract

American Geophysical Union, Spring Meeting 2005, abstract #SP43A-10

Physics

Optics

0394 Instruments And Techniques, 0649 Optics, 0694 Instrumentation And Techniques, 7524 Magnetic Fields, 7594 Instruments And Techniques

Scientific paper

Wavelength tunability of a typical solar polarimetry is limited to its design wavelength and very close to that. Any change in the wavelength will drastically reduce the efficiency of the polarization measurement. A new design for a polarization modulator has been studied and is found to be tunable for a large wavelength range. The design involves three zero-order polymer retarder and combinining them suitably. The basic principle of the design is similar to that of the well-known Pancharatnam technique for an achromatic waveplate design. A theoretical understanding of this tunable modulator design will be presented. The wavelength tunability of this design will be compared with other modulator preformances.

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