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Your search keyword '"Claudio Ramirez"' showing total 2 results
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2 results on '"Claudio Ramirez"'

1. Beam amplitude and polarization control by Liquid Crystal cells

Author

Angel Lizana, Claudio Ramirez, Juan Campos, Irene Estévez, and Alba Peinado

Subjects
Liquid-crystal display, Materials science, Polarization rotator, business.industry, 02 engineering and technology, Polarization (waves), 01 natural sciences, law.invention, 010309 optics, Liquid crystal on silicon, 020210 optoelectronics & photonics, Optics, law, Liquid crystal, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Liquid crystal tunable filter, Physics::Accelerator Physics, Degree of polarization, Radial polarization, business
Abstract

Several methods to control the polarization state and the Degree of Polarization of a beam are proposed. Also a method to generate a beam with an arbitrary polarization distribution by using a parallel aligned Liquid Crystal display is shown.

Published
2016

2. Single biaxial crystal based polarimeters

Author

Irene Estévez, Victor Sopo, Claudio Ramirez, Juan Campos, Alex Turpin, Angel Lizana, and Alba Peinado

Subjects
Physics, business.industry, Linear polarization, Astrophysics::Instrumentation and Methods for Astrophysics, Polarimetry, Optical polarization, 02 engineering and technology, 021001 nanoscience & nanotechnology, Polarization (waves), 01 natural sciences, Metrology, 010309 optics, Conical refraction, Optics, Optical imaging, 0103 physical sciences, Biaxial crystal, 0210 nano-technology, business
Abstract

We present two optical arrangements for the implementation of polarimeters based on the conical refraction phenomenon, occurring on biaxial crystals (BC). The proposed set-ups keep all the benefits related to BC based polarimeters, but decrease costs and complexity when compared with existing alternatives. Whereas one of the proposals allows us to perform linear polarization metrology, the second proposal is suitable to perform complete polarimetry. The two proposed schemes were optimized, experimentally implemented, and tested by measuring different known input polarizations. The obtained results provide their suitability to be applied for polarization metrology.

Published
2016

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