A four-sector polarization converter integrated in a calcite crystal
Karpeev S.V., Podlipnov V.V., Khonina S.N., Paranin V.D., Reshetnikov A.S.

 

Image Processing Systems Institute оf RAS – Branch of the FSRC “Crystallography and Photonics” RAS, Samara, Russia,
Samara National Research University, Samara, Russia

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Abstract:
A new approach to the implementation of sectorial plates for beam polarization conversion is proposed. Using a newly developed etching technology, a four-sector polarization converter integrated into a calcite crystal is implemented. A four-sector polarization converter, which provides a pairwise orthogonal polarization state of the sectors, is fabricated and experimentally characterized. A comparison is made of inter-sector joints of the integrated converter with those of a converter composed of individual wave-plate fragments. Analysis of the spectral properties of such a converter is carried out, wavelengths at which the necessary polarization conversion takes place are determined. The quasi-periodic repetition of phase matching conditions is experimentally shown to slow down  with increasing wavelength.

Keywords:
inhomogeneous polarization, sector polarizing plate, the quality of sector coupling, the spectral method for selecting the phase matching condition.

Citation:
Karpeev SV, Podlipnov VV, Khonina SN, Paranin VD, Reshetnikov AS. A four-sector polarization converter integrated in a calcite crystal. Computer Optics 2018; 42(3): 401-407. DOI: 10.18287/2412-6179-2018-42-3-401-407.

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