期刊
APPLIED PHYSICS LETTERS
卷 107, 期 24, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4937592
关键词
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资金
- NSFC programs [11304151, 61490714, 61435008, 61575093]
- Ph.D. Programs Foundation of the Ministry of Education of China [20120091120020]
- Fundamental Research Funds for the Central Universities [021314380020, 021314380023]
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. (C) 2015 AIP Publishing LLC.
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