Speckle-noise suppression using electro-optical cell with helix- free ferroelectric LC
| Autor: | N. V. Zalyapin, T B Andreeva, A. L. Andreev, I. N. Kompanets, Rostislav S. Starikov |
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| Rok vydání: | 2016 |
| Předmět: |
History
Materials science business.industry Computer Science::Neural and Evolutionary Computation Physics::Optics Speckle noise Ferroelectricity Noise (electronics) Light scattering Computer Science Applications Education Speckle pattern Optics Liquid crystal hemic and lymphatic diseases business Refractive index Phase modulation |
| Zdroj: | Journal of Physics: Conference Series. 737:012019 |
| ISSN: | 1742-6596 1742-6588 |
| DOI: | 10.1088/1742-6596/737/1/012019 |
| Popis: | The authors develop an original and promising method of suppressing the speckle- noise in images generated by a laser beam by means of a compact despeckler based on an electro-optical cell with the smectic ferroelectric liquid crystal (FLC), realizing spatially inhomogeneous phase modulation of light. The mechanisms of destruction of the phase relations in the laser beam passing through a cell with helix-free FLC are discussed. The electric field induces the light scattering and small-scale randomly distributed gradients of the refractive index in FLC layer. The features and benefits of a despeckler using helix-free FLC compared to helix FLC are indicated. |
| Databáze: | OpenAIRE |
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