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Author Chen, Peng ♦ Ji, Wei ♦ Wei, Bing-Yan ♦ Hu, Wei ♦ Lu, Yan-Qing ♦ Chigrinov, Vladimir
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ ALIGNMENT ♦ BEAMS ♦ CONTROL ♦ LASERS ♦ LIQUID CRYSTALS ♦ PLATES ♦ POLARIZATION ♦ SUBSTRATES
Abstract Arbitrary vector beams (VBs) are realized by the designed polarization converters and corresponding vector-photoaligned q-plates. The polarization converter is a specific twisted nematic cell with one substrate homogeneously aligned and the other space-variantly aligned. By combining a polarization-sensitive alignment agent with a dynamic micro-lithography system, various categories of liquid crystal polarization converters are demonstrated. Besides, traditional radially/azimuthally polarized light, high-order and multi-ringed VBs, and a VB array with different orders are generated. The obtained converters are further utilized as polarization masks to implement vector-photoaligning. The technique facilitates both the volume duplication of these converters and the generation of another promising optical element, the q-plate, which is suitable for the generation of VBs for coherent lasers. The combination of proposed polarization converters and correspondingly fabricated q-plates would drastically enhance the capability of polarization control and may bring more possibilities for the design of photonic devices.
ISSN 00036951
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-12-14
Publisher Place United States
Journal Applied Physics Letters
Volume Number 107
Issue Number 24


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