| 词条 | Q-plate |
| 释义 |
A q-plate is an optical device which can generate light beams with orbital angular momentum of light (OAM) from a beam with well-defined Spin angular momentum of light (SAM). It is currently realized using liquid crystals, polymers or sub-wavelength gratings. A method for generating orbital angular momentum of light (OAM) is based on the SAM-OAM coupling that may occur in a medium which is both anisotropic and inhomogeneous. In the case of the q-plate, the OAM sign is controlled by the input polarization.[1][2] References1. ^{{Cite journal|title = Optical Spin-to-Orbital Angular Momentum Conversion in Inhomogeneous Anisotropic Media|url = http://link.aps.org/doi/10.1103/PhysRevLett.96.163905|journal = Physical Review Letters|date = 2006-04-28|pages = 163905|volume = 96|issue = 16|doi = 10.1103/PhysRevLett.96.163905|first = L.|last = Marrucci|first2 = C.|last2 = Manzo|first3 = D.|last3 = Paparo|arxiv = 0712.0099 |bibcode = 2006PhRvL..96p3905M|pmid=16712234}} {{optics-stub}}2. ^{{Cite journal|title = Efficient generation and sorting of orbital angular momentum eigenmodes of light by thermally tuned q-plates|url = http://scitation.aip.org/content/aip/journal/apl/94/23/10.1063/1.3154549|journal = Applied Physics Letters|date = 2009-06-08|issn = 0003-6951|pages = 231124|volume = 94|issue = 23|doi = 10.1063/1.3154549|first = Ebrahim|last = Karimi|first2 = Bruno|last2 = Piccirillo|first3 = Eleonora|last3 = Nagali|first4 = Lorenzo|last4 = Marrucci|first5 = Enrico|last5 = Santamato|arxiv = 0905.0562 |bibcode = 2009ApPhL..94w1124K }} 1 : Light |
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