-
Recent studies on orbital angular momentum (OAM) states in the surface plasmon polariton (SPP) field have primarily focused on the generation of single OAM modes and the evolution of OAM states with various topological charges. However, achieving coherent superposition of two OAM states with well-defined phase relations through precise nanostructure design remains challenging. In this work, we propose a plasmonic nanostructure consisting of paired rectangular slits arranged along circular or segmented Archimedes spiral. The Archimedean spiral of various radii in azimuthal angle provides a geometry-dependent helical phase; coupled with a rotated nanoslit pair, it introduces a geometric phase of twice the rotated angle. By combining chiral spiral with nanoslit pair units, the design both generates plasmonic OAM eigenstates with arbitrary topological charges and enables their coherent superposition. The amplitudes of the two constituent OAM states are continuously tunable through the degree of polarization of the incident light, and their relative phase difference is controlled by the polarization angle, enabling arbitrary superposition of the plasmonic OAM states with continuously variable amplitude ratios and phase differences. Theoretical analysis and numerical simulations demonstrate that circularly polarized illumination produces distinct OAM pure states, whereas linearly polarized light leads to equal-amplitude superposition states with structured field distributions. Moreover, rotating the polarization angle continuously adjusts the relative phase between the eigenstates and produces a predictable rotation of the resultant interference pattern. These results provide a new approach for coherent control of plasmonic OAM states and offer design guidelines for multifunctional on-chip optical field manipulation devices.
-
Keywords:
- Orbital angular momentum /
- Surface plasmon polaritons /
- Orbital angular momentum superposed states /
- Polarization state
-
[1] Allen L, Beijersbergen M W, Spreeuw R J C, Woerdman J P 1992 Phys. Rev. A. 45 8185
[2] Yao A M, Padgett M J 2011 Adv. Opt. Photonics. 3 161
[3] Padgett M, Bowman R 2011 Nat. Photonics. 5 343
[4] Liang Y S, Yao B L, Lei M, Yan S H, Yu X H, Li M M 2016 Acta Opt. Sin. 36 1026003 (in Chinese) [梁言生，姚保利，雷铭，严绍辉，于湘华，李曼曼 2016 光学学报 36 1026003]
[5] Hell S W, Wichmann J 1994 Opt. Lett. 19 780
[6] Bernet S, Jesacher A, Fürhapter S, Maurer C, Ritsch-Marte M 2006 Opt. Express 14 3792
[7] Li L, Zhou S Y, Gao C Q, Fu S Y 2025 Acta Phys. Sin. 74 064202 [李浪, 周诗韵, 高春清, 付时尧 2025物理学报 74 064202]
[8] Zhao Y F, Liu J, Li S H, Wang A D, Zhu L, Luo Y, Chen S, Zhou N, Zheng S, Du J, Wang J 2024 AP. Nexus. 3 016004
[9] Li J, Wang G C, Zheng C L, Li J T, Yang Y, Zhang Z, Yang M S, Zhao H L, Li F Y, Tang T T, Wu L, Li J N, Zhang Y T, Zhang Y, Yao J Q 2021 J. Mater. Chem. C. 9 5478
[10] Zang X F, Zhu Y M, Mao C X, Xu W W, Ding H Z, Xie J Y, Cheng Q Q, Chen L, Peng Y, Hu Q, Gu M, Zhuang S L 2019 Adv. Opt. Mater. 7 1801328
[11] Franke-Arnold S, Leach J, Padgett M J, Lembessis V E, Ellinas D, Wright A J, Girkin J M, Öhberg P, Arnold A S 2007 Opt. Express 15 8619
[12] Kapale K T, Dowling J P 2005 Phys. Rev. Lett. 95 173601
[13] Naidoo D, Roux F S, Dudley A, Litvin I, Piccirillo B, Marrucci L, Forbes A 2016 Nat. Photonics. 10 327
[14] Slussarenko S, Murauski A, Du T, Chigrinov V, Marrucci L, Santamato E 2015 Opt. Lett. 19 4085
[15] Liu H Q, Teng C X, Yang H Y, Deng H C, Xu R H, Deng S J, Chen M, Yuan L B 2018 Opt. Express 26 14792
[16] Zhang K, Yuan Y Y, Zhang D W, Ding X M, Ratni B, Burokur S N, Lu M J, Tang K, Wu Q 2018 Opt. Express 26 1351
[17] Cheng Z K, Luo M C, Sun X Y, Chen M, Zhang Y, Li S Q, Zhu X C 2023 J. Appl. Phys. 133 114502
[18] Zhang N, Xiong B X, Zhang X, Yuan X 2022 Photonics 9 605
[19] Yue F Y, Wen D D, Zhang C M, Gerardot B D, Wang W, Zhang S, Chen X Z 2017 Adv. Mater. 29 1603838
[20] Yang P, Yang R, Li Y C 2021 Opt. Express 29 20229
[21] Zhang S L, Tian X M, Xu J W, Xu Y N, Li L, Liu J L 2025 Acta Phys. Sin. 74 064201 [张胜蓝，田喜敏，许军伟，徐亚宁，李亮，刘杰龙 2025 物理学报 74 064201]
[22] Shitrit N, Nechayev S, Kleiner V, Hasman E 2012 Nano Lett. 12 1620
[23] Liu A P, Xiong X, Ren X F, Cai Y J, Rui G H, Zhan Q W, Guo G C, Guo G P 2013 Sci. Rep. 3 2402
[24] Moon S W, Lee S Y 2020 Plasmonics 15 1781
[25] Kim H, Park J H, Cho S W, Lee S Y, Kang M, Lee B H 2010 Nano Lett. 10 529
[26] Huang F, Jiang X Q, Yuan H M, Yang H N, Li S R, Sun X D 2016 Opt. Lett. 41 1684
[27] Prinz E, Spektor G, Hartelt M, Mahro A K, Aeschlimann M, Orenstein M 2021 Nano Lett. 21 3941
[28] Zhang Y Q, Zeng X Y, Ma L, Zhang R R, Zhan Z J, Chen C, Ren X R, He C W, Liu C X, Cheng C F 2019 Adv. Opt. Mater. 7 1900372
[29] An X Q, Song H S, Zeng X Y, Gu M N, Jiang Z S, He C W, Liu G Y, Cheng C F, Zhang Y Q 2022 Opt. Lett. 47 2032
[30] Dzedolik I V, Pereskokov V 2016 J. Opt. Soc. Am. A 33 1004
[31] Yang S, Chen W, Nelson R L, Zhan Q W 2009 Opt. Lett. 34 3047
[32] Johnson P B, Christy R W. Optical 1972 Phys. Rev. B 6 4370
Metrics
- Abstract views: 38
- PDF Downloads: 0
- Cited By: 0
下载:
