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Proceedings Paper

Characteristics of high-efficiency polarization holographic gratings
Author(s): L. Nedelchev; Todor Todorov; Ludmila Nikolova; Tsveta Petrova; Natalia Tomova; Violeta Dragostinova
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Paper Abstract

Photoanisotropic materials make it possible to produce novel optical elements with specific polarization characteristics. Good examples are polarization holographic gratings (PHG) recorded with two waves with orthogonal circular polarizations. It has been shown that these PHG are of great interest for polarimetry as they allow for an easy and fast measurement of the Stokes parameter S3, including its spectral dependence. Here we discuss in details the polarization characteristics of PHG recorded in high-efficient photoanisotropic materials. It has been taken into consideration that due to the nonzero recording angle the real interference pattern is modulated not only by polarization, but also by intensity. This modifies the final modulation of the photoinduced anisotropic changes in the optical constants of the material and hence, the polarization characteristics of the produced gratings. The differences between the 'ideal' and a real PHG depend on the recording angle and on the photoresponse of the recording material, especially on the presence of scalar component in the photoinduced changes of the refractive index n. These polarization characteristics have also been observed experimentally.

Paper Details

Date Published: 9 April 2001
PDF: 5 pages
Proc. SPIE 4397, 11th International School on Quantum Electronics: Laser Physics and Applications, (9 April 2001); doi: 10.1117/12.425161
Show Author Affiliations
L. Nedelchev, Central Lab. of Optical Storage and Processing of Information (Bulgaria)
Todor Todorov, Central Lab. of Optical Storage and Processing of Information (Bulgaria)
Ludmila Nikolova, Central Lab. of Optical Storage and Processing of Information (Bulgaria)
Tsveta Petrova, Central Lab. of Optical Storage and Processing of Information (Bulgaria)
Natalia Tomova, Central Lab. of Optical Storage and Processing of Information (Bulgaria)
Violeta Dragostinova, Central Lab. of Optical Storage and Processing of Information (Bulgaria)


Published in SPIE Proceedings Vol. 4397:
11th International School on Quantum Electronics: Laser Physics and Applications
Peter A. Atanasov; Stefka Cartaleva, Editor(s)

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