A vector optical vortex generated and focused using a metalens

被引：45

作者：

Kotlyar V.V. ^{[1
,2
]}

Nalimov A.G. ^{[1
,2
]}

机构：

[1] Image Processing Systems Institute of RAS – Branch of the FSRC “Crystallography and Photonics” RAS, Samara

[2] Samara National Research University, Samara

来源：

Computer Optics | 2017年 / 41卷 / 05期

关键词：

Diffraction grating; Metalens; Optical vortex; Zone plate;

D O I：

10.18287/2412-6179-2017-41-5-645-654

中图分类号：

学科分类号：

摘要：

Using a FDTD-aided numerical simulation we show that a sharp focal spot can be generated by a spiral metalens made of amorphous silicon, with unit topological charge and unit numerical aperture (NA = 1). The focal spot intensity is nearly round-shaped when using an incident TE-wave, and in the form of a doughnut for an incident TM-wave. We are the first to show theoretically and experimentally that the focal intensity pattern has local regions - located symmetrically or asymmetrically both at the center and on the periphery - where the energy flux is inversely directed. The discovered effect can be used for moving a microparticle in the opposite direction to the light propagation. © 2017, Institution of Russian Academy of Sciences. All rights reserved.

引用

页码：645 / 654

页数：9

共 28 条

[1]

Litchinitser N.M., Structured light meets structured matter, Science, 337, 6098, pp. 1054-1055, (2012)

[2]

Kildishev A.V., Boltasseva A., Shalaev V.M., Planar photonics with metasurfaces, Science, 339, 6125, (2013)

[3]

Zhao Z., Wang J., Li S., Willner A.E., Metamaterials-based broadband generation of orbital angular momentum carry- ing vector beams, Opt Lett, 38, 6, pp. 932-934, (2013)

[4]

Yi X., Lin X., Zhang Z., Li Y., Zhou X., Liu Y., Chen S., Luo H., Wen S., Generation of cylindrical vector vortex beams by two cascaded metasurfaces, Opt Express, 22, 14, pp. 17207-17215, (2014)

[5]

Zhao Z., Pu M., Gao H., Jin J., Li X., Ma X., Wang Y., Gao P., Luo X., Multispectral optical metasurfaces enabled by achromatic phase transition, Sci Rep, 5, (2015)

[6]

Sun J., Wang X., Xu T., Kudyshev Z.A., Cartwright A.N., Litchinitser N.M., Spinning light on the nanoscale, Nano Lett, 14, 5, pp. 2726-2729, (2014)

[7]

Karimi E., Schulz S.A., Leon I.D., Qassim H., Upham J., Boyd R.W., Generating optical orbital angular momentum at visible wavelengths using a plasmonic metasurface, Light Sci Appl, 3, (2014)

[8]

Wang W., Li Y., Guo Z., Li R., Zhang J., Zhang A., Qu S., Ul-tra-thin optical vortex phase plate based on the metasurface and the angular momentum transformation, J Opt, 17, 4, (2015)

[9]

Chong K.E., Staube I., James A., Dominguez J., Liu S., Campi-One S., Subramania G.S., Luk T.S., Decker M., Neshev D.N., Brener I., Kivshar Y.S., Polarization-independent silicon metadevices for efficient optical wavefront control, Nano Lett, 15, 8, pp. 5369-5374, (2015)

[10]

Chen H., Taylor A.J., Yu N., A review of metasurfaces

← 1 2 3 →