RESEARCH

Resum

 

Metrology

During the last years we have worked in different methods of metrology. We have proposed a point diffraction interferometer in which the phase stepping can be implemented by the use of liquid crystals. He has proposed different numerical methods to obtain the profile of a surface from the data obtained with an optical deflectometer or a wave front sensor. Different types of deflectometer geometries have been studied. These methods are being implemented in commercial set-ups. In collaboration with the ALBA synchrotron that is being built in Barcelona we are developing new methods to measure the shape of X-ray mirrors with ultra-precision.

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Polarimetry

Polarimetry is the measurement and interpretation of the geometrical orientation of the electromagnetic wave oscillations.

The last years we have been working on a research line related to the design, optimization and implementation of polarimeters, the main devices to perform polarimetric metrology. The main study is focused on the design of polarimeters based on birefringent materials, including liquid crystal and biaxial-crystals (the latter group based on the conical refraction phenomenon). Recently, the implemented polarimeters are being used for different applications, from the characterization of the optical properties of materials to the contrast enhancement of images. 

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Diffractive Optics

Resum

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