Tunable liquid crystal q-plates with arbitrary topological charge
Open accessAbstract
Using a photoalignment technique with a sulphonic azo-dye as the surfactant aligning material, we fabricated electrically tunable liquid crystal q-plates with topological charge 0.5, 1.5 and 3 for generating optical vortex beams with definite orbital angular momentum (OAM) 1,3 and 6 per photon (in units of ¯h), respectively. We carried out several tests on our q-plates, including OAM tomography, finding excellent performances. These devices can have useful applications in general and quantum optics.
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The spin-controlled unidirectional coupling effect is very robust to the details of the system and equally appears with near 100%-efficiency at metal surfaces, nanofibers, and various waveguides.
“Moreover, the effect is very robust to the details of the system and equally appears with near 100%-efficiency at metal surfaces 46,47,49 , nanofibers 48,50,126 , and various waveguides 51,52,125,127,128 .”
From Spin–orbit interactions of light (2015) · cites this paper as [127]
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References 22 · Cited by 344
- Authors
- Slussarenko, S., Murauski, A., Du, T., Chigrinov, V., Marrucci, L., & Santamato, E.
- Affiliations
- University of Naples Federico II (IT)
- Hong Kong University of Science and Technology (HK)
- ORCID
- Venue
- Optics Express
- Publisher
- Optica Publishing Group
- Published
- 2011-02-16
- Volume
- 19
- Issue
- 5
- Pages
- 4085
- ISSN
- 1094-4087 (ISSN-L)
- OpenAlex
- W2019039367
- Cited by
- 344
- References
- 22
- Citations by year
- 2026: 12 · 2025: 16 · 2024: 17 · 2023: 17 · 2022: 23 · 2021: 28 · 2020: 26 · 2019: 36 · 2018: 25 · 2017: 31 · 2016: 30 · 2015: 27 · 2014: 20 · 2013: 23 · 2012: 9
- FWCI
- 9.70
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Optics Express (publishedVersion)
- PubMed (publishedVersion)
- Rare & Special e-Zone (The Hong Kong University of Science and Technology) (submittedVersion)
- Griffith Research Online (submittedVersion)
- Funders
- European Commission (612208, 255914)
- Hong Kong University of Science and Technology (CERG 612310, CERG 612409)
- Topics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Orbital Angular Momentum in Optics
- Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Liquid Crystal Research Advancements
- Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Metamaterials and Metasurfaces Applications
- Keywords
- q-plate, liquid crystals, topological charge, orbital angular momentum, optical vortices, photoalignment, azo dyes, quantum optics
- MeSH terms
- Electromagnetic Fields, Equipment Design, Light, Materials Testing, Refractometry, Scattering, Radiation, Equipment Failure Analysis, Liquid Crystals
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