HR: 1330h
AN: SP43A-10    [Abstracts]
TI: Concept of a Wavelength Tunable Solar Polarimetry
AU: * Kasiviswanathan, S
EM: sankara@nso.edu
AF: National Solar Observatory, PO Box 62, Sunspot, NM 88349 United States
AB: 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.
DE: 0394 Instruments and techniques
DE: 0649 Optics
DE: 0694 Instrumentation and techniques
DE: 7524 Magnetic fields
DE: 7594 Instruments and techniques
SC: Solar Physics Division - AAS [SP]
MN: 2005 Joint Assembly