Proyecto de Investigación:
FABRICACION E INTEGRACION DE LOS MODELOS QM, FM Y FS DE SO/PHI (POLARIMETRIC AND HELIOSEISMIC IMAGER FOR SOLAR ORBITER)

Logotipo del proyecto

Colaboradores

Financiadores

ID

ESP2014-56169-C6-3-R

Autores

Publicaciones

Miniatura
PublicaciónAcceso Abierto
Fine tuning method for optimization of liquid crystal based polarimeters
(Optica Publishing Group, 2018-04-18) Álvarez-Herrrero, Alberto; García Parejo, Pilar; Silva-López, Manuel; Ministerio de Economía y Competitividad (MINECO)
Liquid crystal variable retarders (LCVR) based polarimeters perform temporal polarization modulation by applying a sequence of driving voltages to introduce different optical retardances. However, even after a careful design and fabrication, manufacturing tolerances (i.e., slight optical axis misalignments, instrument residual polarization, optical activity in the LCVRs...) or the final system configuration (i.e., LCVRs in a convergent optical beam, thermal gradient across the clear aperture...) produce deviations from the ideal setup. As a consequence, all of these effects can reduce the polarimetric modulation efficiency of the device and, therefore, its signal-to-noise ratio. Hence, the voltage sequence applied according to the LCVR calibration curves may not be suitable to reach the optimal theoretical polarimetric efficiencies. In this work, a systematic fine tuning method for the LCVRs driving voltages is described an experimentally demonstrated.

Unidades organizativas

Descripción

Palabras clave

footer.link.logos.derechosLogo Acceso abiertoLogo PublicacionesLogo Autores
Logo Sherpa/RomeoLogo DulcineaLogo Creative CommonsLogo RecolectaLogo Open AireLogo Hispana