Liquid crystal spatial-mode converters for the orbital angular momentum of light
We present a tunable liquid crystal device that converts pure orbital angular momentum eigenmodes of a light beam into equal-weight superpositions of opposite-handed eigenmodes and vice versa. For specific input states, the device may thus simulate the behavior of a π 2 phase retarder in a given two...
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Veröffentlicht in: | Journal of optics (2010) 2013-02, Vol.15 (2), p.25406-1-6 |
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Hauptverfasser: | , , , , |
Format: | Artikel |
Sprache: | eng |
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Online-Zugang: | Volltext |
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Zusammenfassung: | We present a tunable liquid crystal device that converts pure orbital angular momentum eigenmodes of a light beam into equal-weight superpositions of opposite-handed eigenmodes and vice versa. For specific input states, the device may thus simulate the behavior of a π 2 phase retarder in a given two-dimensional orbital angular momentum subspace, analogous to a quarter-wave plate for optical polarization. A variant of the same device generates the same final modes starting from a Gaussian input. |
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ISSN: | 2040-8978 2040-8986 |
DOI: | 10.1088/2040-8978/15/2/025406 |