Abstract

This study proposes a method to achieve excitation of surface plasmon polaritons (SPPs) with tunable directions and intensity ratios on a designed two thin slit structure by the phase control of dual fundamental Gaussian beams. Simply modulating the phase difference between two incident fundamental Gaussian beams (i.e. TEM0,0 mode laser beam) controls the propagating direction of the resulting SPP wave between two opposite linear directions and also the value of the intensity ratio between propagating SPP waves in two opposite directions. The proposed method achieves a wide dynamic SPP intensity ratio adjusting range from −20 dB to 20 dB. This easy method of changing the direction of SPPs makes the dynamic control of the direction of SPP waves practicable, which shows great potential in plasmonic applications.

© 2017 Optical Society of America

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2017 (1)

B. Eftekharinia, A. Moshaii, and A. Dabirian, “Design of a Slit-Groove Coupler for Unidirectional Excitation of the Guided Surface Plasmon Polaritons Through a Plasmonic Slot Waveguide,” Plasmonics 12(1), 131–138 (2017).
[Crossref]

2016 (2)

T. Liu and S. Y. Wang, “Nanoscale plasmonic coupler with tunable direction and intensity ratio controlled by optical vortex,” J. Appl. Phys. 120(12), 123108 (2016).
[Crossref]

H. F. Hu, X. Zeng, Y. Zhao, J. Li, H. M. Song, G. F. Song, Y. Xu, and Q. Q. Gan, “Unidirectional Coupling of Surface Plasmon Polaritons by a Single Slit on a Metal Substrate,” IEEE Photonics Technol. Lett. 28(21), 2395–2398 (2016).
[Crossref]

2015 (1)

S. L. Ding and G. P. Wang, “All-optical transistors and logic gates using a parity-time-symmetric Y-junction: Design and simulation,” J. Appl. Phys. 118(12), 123104 (2015).
[Crossref]

2014 (2)

Y. F. Zhang, H. M. Wang, H. M. Liao, Z. Li, C. W. Sun, J. J. Chen, and Q. H. Gong, “Unidirectional launching of surface plasmons at the subwavelength scale,” Appl. Phys. Lett. 105(23), 231101 (2014).
[Crossref]

J. Yang, X. Xiao, C. Hu, W. Zhang, S. Zhou, and J. Zhang, “Broadband surface plasmon polariton directional coupling via asymmetric optical slot nanoantenna pair,” Nano Lett. 14(2), 704–709 (2014).
[Crossref] [PubMed]

2013 (2)

J. Lin, J. P. B. Mueller, Q. Wang, G. Yuan, N. Antoniou, X. C. Yuan, and F. Capasso, “Polarization-controlled tunable directional coupling of surface plasmon polaritons,” Science 340(6130), 331–334 (2013).
[Crossref] [PubMed]

D. Maluenda, I. Juvells, R. Martínez-Herrero, and A. Carnicer, “Reconfigurable beams with arbitrary polarization and shape distributions at a given plane,” Opt. Express 21(5), 5432–5439 (2013).
[Crossref] [PubMed]

2012 (2)

2011 (4)

A. Baron, E. Devaux, J. C. Rodier, J. P. Hugonin, E. Rousseau, C. Genet, T. W. Ebbesen, and P. Lalanne, “Compact antenna for efficient and unidirectional launching and decoupling of surface plasmons,” Nano Lett. 11(10), 4207–4212 (2011).
[Crossref] [PubMed]

X. W. Li, Q. F. Tan, B. F. Bai, and G. F. Jin, “Experimental demonstration of tunable directional excitation of surface plasmon polaritons with a subwavelength metallic double slit,” Appl. Phys. Lett. 98(25), 251109 (2011).
[Crossref]

Y. Guo, L. Yan, W. Pan, B. Luo, K. Wen, Z. Guo, H. Li, and X. Luo, “A plasmonic splitter based on slot cavity,” Opt. Express 19(15), 13831–13838 (2011).
[Crossref] [PubMed]

M. L. Juan, M. Righini, and R. Quidant, “Plasmon nano-optical tweezers,” Nat. Photonics 5(6), 349–356 (2011).
[Crossref]

2010 (2)

J. A. Schuller, E. S. Barnard, W. Cai, Y. C. Jun, J. S. White, and M. L. Brongersma, “Plasmonics for extreme light concentration and manipulation,” Nat. Mater. 9(3), 193–204 (2010).
[Crossref] [PubMed]

J. J. Chen, Z. Li, S. Yue, and Q. H. Gong, “Efficient unidirectional generation of surface plasmon polaritons with asymmetric single-nanoslit,” Appl. Phys. Lett. 97(4), 041113 (2010).
[Crossref]

2009 (1)

S. B. Choi, D. J. Park, Y. K. Jeong, Y. C. Yun, M. S. Jeong, C. C. Byeon, J. H. Kang, Q. H. Park, and D. S. Kim, “Directional control of surface plasmon polariton waves propagating through an asymmetric Bragg resonator,” Appl. Phys. Lett. 94(6), 063115 (2009).
[Crossref]

2008 (4)

T. Xu, Y. H. Zhao, D. C. Gan, C. T. Wang, C. L. Du, and X. G. Luo, “Directional excitation of surface plasmons with subwavelength slits,” Appl. Phys. Lett. 92(10), 101501 (2008).
[Crossref]

T. W. Ebbesen, C. Genet, and S. I. Bozhevolnyi, “Surface-plasmon circuitry,” Phys. Today 61(5), 44–50 (2008).
[Crossref]

J. Homola, “Surface plasmon resonance sensors for detection of chemical and biological species,” Chem. Rev. 108(2), 462–493 (2008).
[Crossref] [PubMed]

S. C. Chu, C. S. Yang, and K. Otsuka, “Vortex array laser beam generation from a Dove prism-embedded unbalanced Mach-Zehnder interferometer,” Opt. Express 16(24), 19934–19949 (2008).
[Crossref] [PubMed]

2007 (3)

F. López-Tejeira, S. G. Rodrigo, L. Martin-Moreno, F. J. Garcia-Vidal, E. Devaux, T. W. Ebbesen, J. R. Krenn, I. P. Radko, S. I. Bozhevolnyi, M. U. Gonzalez, J. C. Weeber, and A. Dereux, “Efficient unidirectional nanoslit couplers for surface plasmons,” Nat. Phys. 3(5), 324–328 (2007).
[Crossref]

J. W. M. Chon, C. Bullen, P. Zijlstra, and M. Gu, “Spectral encoding on gold nanorods doped in a silica sol-gel matrix and its application to high-density optical data storage,” Adv. Funct. Mater. 17(6), 875–880 (2007).
[Crossref]

S. Lal, S. Link, and N. J. Halas, “Nano-optics from sensing to waveguiding,” Nat. Photonics 1(11), 641–648 (2007).
[Crossref]

2006 (1)

E. Ozbay, “Plasmonics: merging photonics and electronics at nanoscale dimensions,” Science 311(5758), 189–193 (2006).
[Crossref] [PubMed]

2005 (6)

S. Medhekar and R. K. Sarkar, “All-optical passive transistor,” Opt. Lett. 30(8), 887–889 (2005).
[Crossref] [PubMed]

S. Otsuki, K. Tamada, and S. Wakida, “Wavelength-scanning surface plasmon resonance imaging,” Appl. Opt. 44(17), 3468–3472 (2005).
[Crossref] [PubMed]

A. V. Zayats, I. I. Smolyaninov, and A. A. Maradudin, “Nano-optics of surface plasmon polaritons,” Phys. Rep. 408(3-4), 131–314 (2005).
[Crossref]

Z. Liu, J. M. Steele, W. Srituravanich, Y. Pikus, C. Sun, and X. Zhang, “Focusing surface plasmons with a plasmonic lens,” Nano Lett. 5(9), 1726–1729 (2005).
[Crossref] [PubMed]

H. Shi, C. Wang, C. Du, X. Luo, X. Dong, and H. Gao, “Beam manipulating by metallic nano-slits with variant widths,” Opt. Express 13(18), 6815–6820 (2005).
[Crossref] [PubMed]

P. Lalanne, J. P. Hugonin, and J. C. Rodier, “Theory of surface plasmon generation at nanoslit apertures,” Phys. Rev. Lett. 95(26), 263902 (2005).
[Crossref] [PubMed]

2003 (2)

W. L. Barnes, A. Dereux, and T. W. Ebbesen, “Surface plasmon subwavelength optics,” Nature 424(6950), 824–830 (2003).
[Crossref] [PubMed]

S. A. Maier, P. G. Kik, H. A. Atwater, S. Meltzer, E. Harel, B. E. Koel, and A. A. G. Requicha, “Local detection of electromagnetic energy transport below the diffraction limit in metal nanoparticle plasmon waveguides,” Nat. Mater. 2(4), 229–232 (2003).
[Crossref] [PubMed]

1996 (2)

B. Hecht, H. Bielefeldt, L. Novotny, Y. Inouye, and D. W. Pohl, “Local excitation, scattering, and interference of surface plasmons,” Phys. Rev. Lett. 77(9), 1889–1892 (1996).
[Crossref] [PubMed]

H. Knobloch, G. von Szada-Borryszkowski, S. Woigk, A. Helms, and L. Brehmer, “Dispersive surface plasmon microscopy for the characterization of ultrathin organic films,” Appl. Phys. Lett. 69(16), 2336–2337 (1996).
[Crossref]

1988 (1)

B. Rothenhäusler and W. Knoll, “Surface-Plasmon Microscopy,” Nature 332(6165), 615–617 (1988).
[Crossref]

Antoniou, N.

J. Lin, J. P. B. Mueller, Q. Wang, G. Yuan, N. Antoniou, X. C. Yuan, and F. Capasso, “Polarization-controlled tunable directional coupling of surface plasmon polaritons,” Science 340(6130), 331–334 (2013).
[Crossref] [PubMed]

Atwater, H. A.

S. A. Maier, P. G. Kik, H. A. Atwater, S. Meltzer, E. Harel, B. E. Koel, and A. A. G. Requicha, “Local detection of electromagnetic energy transport below the diffraction limit in metal nanoparticle plasmon waveguides,” Nat. Mater. 2(4), 229–232 (2003).
[Crossref] [PubMed]

Bai, B. F.

X. W. Li, Q. F. Tan, B. F. Bai, and G. F. Jin, “Experimental demonstration of tunable directional excitation of surface plasmon polaritons with a subwavelength metallic double slit,” Appl. Phys. Lett. 98(25), 251109 (2011).
[Crossref]

Barnard, E. S.

J. A. Schuller, E. S. Barnard, W. Cai, Y. C. Jun, J. S. White, and M. L. Brongersma, “Plasmonics for extreme light concentration and manipulation,” Nat. Mater. 9(3), 193–204 (2010).
[Crossref] [PubMed]

Barnes, W. L.

W. L. Barnes, A. Dereux, and T. W. Ebbesen, “Surface plasmon subwavelength optics,” Nature 424(6950), 824–830 (2003).
[Crossref] [PubMed]

Baron, A.

A. Baron, E. Devaux, J. C. Rodier, J. P. Hugonin, E. Rousseau, C. Genet, T. W. Ebbesen, and P. Lalanne, “Compact antenna for efficient and unidirectional launching and decoupling of surface plasmons,” Nano Lett. 11(10), 4207–4212 (2011).
[Crossref] [PubMed]

Bielefeldt, H.

B. Hecht, H. Bielefeldt, L. Novotny, Y. Inouye, and D. W. Pohl, “Local excitation, scattering, and interference of surface plasmons,” Phys. Rev. Lett. 77(9), 1889–1892 (1996).
[Crossref] [PubMed]

Bozhevolnyi, S. I.

T. W. Ebbesen, C. Genet, and S. I. Bozhevolnyi, “Surface-plasmon circuitry,” Phys. Today 61(5), 44–50 (2008).
[Crossref]

F. López-Tejeira, S. G. Rodrigo, L. Martin-Moreno, F. J. Garcia-Vidal, E. Devaux, T. W. Ebbesen, J. R. Krenn, I. P. Radko, S. I. Bozhevolnyi, M. U. Gonzalez, J. C. Weeber, and A. Dereux, “Efficient unidirectional nanoslit couplers for surface plasmons,” Nat. Phys. 3(5), 324–328 (2007).
[Crossref]

Brehmer, L.

H. Knobloch, G. von Szada-Borryszkowski, S. Woigk, A. Helms, and L. Brehmer, “Dispersive surface plasmon microscopy for the characterization of ultrathin organic films,” Appl. Phys. Lett. 69(16), 2336–2337 (1996).
[Crossref]

Brongersma, M. L.

J. A. Schuller, E. S. Barnard, W. Cai, Y. C. Jun, J. S. White, and M. L. Brongersma, “Plasmonics for extreme light concentration and manipulation,” Nat. Mater. 9(3), 193–204 (2010).
[Crossref] [PubMed]

Bullen, C.

J. W. M. Chon, C. Bullen, P. Zijlstra, and M. Gu, “Spectral encoding on gold nanorods doped in a silica sol-gel matrix and its application to high-density optical data storage,” Adv. Funct. Mater. 17(6), 875–880 (2007).
[Crossref]

Byeon, C. C.

S. B. Choi, D. J. Park, Y. K. Jeong, Y. C. Yun, M. S. Jeong, C. C. Byeon, J. H. Kang, Q. H. Park, and D. S. Kim, “Directional control of surface plasmon polariton waves propagating through an asymmetric Bragg resonator,” Appl. Phys. Lett. 94(6), 063115 (2009).
[Crossref]

Cai, W.

J. A. Schuller, E. S. Barnard, W. Cai, Y. C. Jun, J. S. White, and M. L. Brongersma, “Plasmonics for extreme light concentration and manipulation,” Nat. Mater. 9(3), 193–204 (2010).
[Crossref] [PubMed]

Capasso, F.

J. Lin, J. P. B. Mueller, Q. Wang, G. Yuan, N. Antoniou, X. C. Yuan, and F. Capasso, “Polarization-controlled tunable directional coupling of surface plasmon polaritons,” Science 340(6130), 331–334 (2013).
[Crossref] [PubMed]

Carnicer, A.

Chen, J. J.

Y. F. Zhang, H. M. Wang, H. M. Liao, Z. Li, C. W. Sun, J. J. Chen, and Q. H. Gong, “Unidirectional launching of surface plasmons at the subwavelength scale,” Appl. Phys. Lett. 105(23), 231101 (2014).
[Crossref]

J. J. Chen, Z. Li, S. Yue, and Q. H. Gong, “Efficient unidirectional generation of surface plasmon polaritons with asymmetric single-nanoslit,” Appl. Phys. Lett. 97(4), 041113 (2010).
[Crossref]

Choi, S. B.

S. B. Choi, D. J. Park, Y. K. Jeong, Y. C. Yun, M. S. Jeong, C. C. Byeon, J. H. Kang, Q. H. Park, and D. S. Kim, “Directional control of surface plasmon polariton waves propagating through an asymmetric Bragg resonator,” Appl. Phys. Lett. 94(6), 063115 (2009).
[Crossref]

Chon, J. W. M.

J. W. M. Chon, C. Bullen, P. Zijlstra, and M. Gu, “Spectral encoding on gold nanorods doped in a silica sol-gel matrix and its application to high-density optical data storage,” Adv. Funct. Mater. 17(6), 875–880 (2007).
[Crossref]

Chu, S. C.

Dabirian, A.

B. Eftekharinia, A. Moshaii, and A. Dabirian, “Design of a Slit-Groove Coupler for Unidirectional Excitation of the Guided Surface Plasmon Polaritons Through a Plasmonic Slot Waveguide,” Plasmonics 12(1), 131–138 (2017).
[Crossref]

Dereux, A.

F. López-Tejeira, S. G. Rodrigo, L. Martin-Moreno, F. J. Garcia-Vidal, E. Devaux, T. W. Ebbesen, J. R. Krenn, I. P. Radko, S. I. Bozhevolnyi, M. U. Gonzalez, J. C. Weeber, and A. Dereux, “Efficient unidirectional nanoslit couplers for surface plasmons,” Nat. Phys. 3(5), 324–328 (2007).
[Crossref]

W. L. Barnes, A. Dereux, and T. W. Ebbesen, “Surface plasmon subwavelength optics,” Nature 424(6950), 824–830 (2003).
[Crossref] [PubMed]

Devaux, E.

A. Baron, E. Devaux, J. C. Rodier, J. P. Hugonin, E. Rousseau, C. Genet, T. W. Ebbesen, and P. Lalanne, “Compact antenna for efficient and unidirectional launching and decoupling of surface plasmons,” Nano Lett. 11(10), 4207–4212 (2011).
[Crossref] [PubMed]

F. López-Tejeira, S. G. Rodrigo, L. Martin-Moreno, F. J. Garcia-Vidal, E. Devaux, T. W. Ebbesen, J. R. Krenn, I. P. Radko, S. I. Bozhevolnyi, M. U. Gonzalez, J. C. Weeber, and A. Dereux, “Efficient unidirectional nanoslit couplers for surface plasmons,” Nat. Phys. 3(5), 324–328 (2007).
[Crossref]

Di Martino, G.

Ding, S. L.

S. L. Ding and G. P. Wang, “All-optical transistors and logic gates using a parity-time-symmetric Y-junction: Design and simulation,” J. Appl. Phys. 118(12), 123104 (2015).
[Crossref]

Dong, X.

Du, C.

Du, C. L.

T. Xu, Y. H. Zhao, D. C. Gan, C. T. Wang, C. L. Du, and X. G. Luo, “Directional excitation of surface plasmons with subwavelength slits,” Appl. Phys. Lett. 92(10), 101501 (2008).
[Crossref]

Ebbesen, T. W.

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F. López-Tejeira, S. G. Rodrigo, L. Martin-Moreno, F. J. Garcia-Vidal, E. Devaux, T. W. Ebbesen, J. R. Krenn, I. P. Radko, S. I. Bozhevolnyi, M. U. Gonzalez, J. C. Weeber, and A. Dereux, “Efficient unidirectional nanoslit couplers for surface plasmons,” Nat. Phys. 3(5), 324–328 (2007).
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Wen, K.

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J. A. Schuller, E. S. Barnard, W. Cai, Y. C. Jun, J. S. White, and M. L. Brongersma, “Plasmonics for extreme light concentration and manipulation,” Nat. Mater. 9(3), 193–204 (2010).
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H. Knobloch, G. von Szada-Borryszkowski, S. Woigk, A. Helms, and L. Brehmer, “Dispersive surface plasmon microscopy for the characterization of ultrathin organic films,” Appl. Phys. Lett. 69(16), 2336–2337 (1996).
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J. Yang, X. Xiao, C. Hu, W. Zhang, S. Zhou, and J. Zhang, “Broadband surface plasmon polariton directional coupling via asymmetric optical slot nanoantenna pair,” Nano Lett. 14(2), 704–709 (2014).
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Xu, T.

T. Xu, Y. H. Zhao, D. C. Gan, C. T. Wang, C. L. Du, and X. G. Luo, “Directional excitation of surface plasmons with subwavelength slits,” Appl. Phys. Lett. 92(10), 101501 (2008).
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Xu, Y.

H. F. Hu, X. Zeng, Y. Zhao, J. Li, H. M. Song, G. F. Song, Y. Xu, and Q. Q. Gan, “Unidirectional Coupling of Surface Plasmon Polaritons by a Single Slit on a Metal Substrate,” IEEE Photonics Technol. Lett. 28(21), 2395–2398 (2016).
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Yan, L.

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Yang, J.

J. Yang, X. Xiao, C. Hu, W. Zhang, S. Zhou, and J. Zhang, “Broadband surface plasmon polariton directional coupling via asymmetric optical slot nanoantenna pair,” Nano Lett. 14(2), 704–709 (2014).
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Y. Liu, S. Palomba, Y. Park, T. Zentgraf, X. Yin, and X. Zhang, “Compact magnetic antennas for directional excitation of surface plasmons,” Nano Lett. 12(9), 4853–4858 (2012).
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J. Lin, J. P. B. Mueller, Q. Wang, G. Yuan, N. Antoniou, X. C. Yuan, and F. Capasso, “Polarization-controlled tunable directional coupling of surface plasmon polaritons,” Science 340(6130), 331–334 (2013).
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J. Lin, J. P. B. Mueller, Q. Wang, G. Yuan, N. Antoniou, X. C. Yuan, and F. Capasso, “Polarization-controlled tunable directional coupling of surface plasmon polaritons,” Science 340(6130), 331–334 (2013).
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J. J. Chen, Z. Li, S. Yue, and Q. H. Gong, “Efficient unidirectional generation of surface plasmon polaritons with asymmetric single-nanoslit,” Appl. Phys. Lett. 97(4), 041113 (2010).
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Y. Liu, S. Palomba, Y. Park, T. Zentgraf, X. Yin, and X. Zhang, “Compact magnetic antennas for directional excitation of surface plasmons,” Nano Lett. 12(9), 4853–4858 (2012).
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J. Yang, X. Xiao, C. Hu, W. Zhang, S. Zhou, and J. Zhang, “Broadband surface plasmon polariton directional coupling via asymmetric optical slot nanoantenna pair,” Nano Lett. 14(2), 704–709 (2014).
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J. Yang, X. Xiao, C. Hu, W. Zhang, S. Zhou, and J. Zhang, “Broadband surface plasmon polariton directional coupling via asymmetric optical slot nanoantenna pair,” Nano Lett. 14(2), 704–709 (2014).
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Y. Liu, S. Palomba, Y. Park, T. Zentgraf, X. Yin, and X. Zhang, “Compact magnetic antennas for directional excitation of surface plasmons,” Nano Lett. 12(9), 4853–4858 (2012).
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H. F. Hu, X. Zeng, Y. Zhao, J. Li, H. M. Song, G. F. Song, Y. Xu, and Q. Q. Gan, “Unidirectional Coupling of Surface Plasmon Polaritons by a Single Slit on a Metal Substrate,” IEEE Photonics Technol. Lett. 28(21), 2395–2398 (2016).
[Crossref]

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T. Xu, Y. H. Zhao, D. C. Gan, C. T. Wang, C. L. Du, and X. G. Luo, “Directional excitation of surface plasmons with subwavelength slits,” Appl. Phys. Lett. 92(10), 101501 (2008).
[Crossref]

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J. Yang, X. Xiao, C. Hu, W. Zhang, S. Zhou, and J. Zhang, “Broadband surface plasmon polariton directional coupling via asymmetric optical slot nanoantenna pair,” Nano Lett. 14(2), 704–709 (2014).
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J. W. M. Chon, C. Bullen, P. Zijlstra, and M. Gu, “Spectral encoding on gold nanorods doped in a silica sol-gel matrix and its application to high-density optical data storage,” Adv. Funct. Mater. 17(6), 875–880 (2007).
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S. B. Choi, D. J. Park, Y. K. Jeong, Y. C. Yun, M. S. Jeong, C. C. Byeon, J. H. Kang, Q. H. Park, and D. S. Kim, “Directional control of surface plasmon polariton waves propagating through an asymmetric Bragg resonator,” Appl. Phys. Lett. 94(6), 063115 (2009).
[Crossref]

T. Xu, Y. H. Zhao, D. C. Gan, C. T. Wang, C. L. Du, and X. G. Luo, “Directional excitation of surface plasmons with subwavelength slits,” Appl. Phys. Lett. 92(10), 101501 (2008).
[Crossref]

J. J. Chen, Z. Li, S. Yue, and Q. H. Gong, “Efficient unidirectional generation of surface plasmon polaritons with asymmetric single-nanoslit,” Appl. Phys. Lett. 97(4), 041113 (2010).
[Crossref]

Y. F. Zhang, H. M. Wang, H. M. Liao, Z. Li, C. W. Sun, J. J. Chen, and Q. H. Gong, “Unidirectional launching of surface plasmons at the subwavelength scale,” Appl. Phys. Lett. 105(23), 231101 (2014).
[Crossref]

H. Knobloch, G. von Szada-Borryszkowski, S. Woigk, A. Helms, and L. Brehmer, “Dispersive surface plasmon microscopy for the characterization of ultrathin organic films,” Appl. Phys. Lett. 69(16), 2336–2337 (1996).
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A. Baron, E. Devaux, J. C. Rodier, J. P. Hugonin, E. Rousseau, C. Genet, T. W. Ebbesen, and P. Lalanne, “Compact antenna for efficient and unidirectional launching and decoupling of surface plasmons,” Nano Lett. 11(10), 4207–4212 (2011).
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[Crossref] [PubMed]

J. Yang, X. Xiao, C. Hu, W. Zhang, S. Zhou, and J. Zhang, “Broadband surface plasmon polariton directional coupling via asymmetric optical slot nanoantenna pair,” Nano Lett. 14(2), 704–709 (2014).
[Crossref] [PubMed]

Z. Liu, J. M. Steele, W. Srituravanich, Y. Pikus, C. Sun, and X. Zhang, “Focusing surface plasmons with a plasmonic lens,” Nano Lett. 5(9), 1726–1729 (2005).
[Crossref] [PubMed]

Nat. Mater. (2)

J. A. Schuller, E. S. Barnard, W. Cai, Y. C. Jun, J. S. White, and M. L. Brongersma, “Plasmonics for extreme light concentration and manipulation,” Nat. Mater. 9(3), 193–204 (2010).
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Figures (5)

Fig. 1
Fig. 1 Schematic diagram of a double slit structure and the definition of coordinate: (A) the top-view, and (B) the side-view. The optical field is normally incident from the substrate side and is propagating along the + z axis.
Fig. 2
Fig. 2 (A) Schematic diagram of dual Gaussian beam transverse position. (B) Simulated intensity distribution of dual Gaussian beams. (C) and (D): E-field real part and E-field imagined part of the dual Gaussian beams at the moment that the energy of one Gaussian beam is completely stored in the E-field real part, and the energy of the other one is completely stored in the E-field imagined part. The white double-headed arrows in the upper right hand corners of Figures (B), (C) and (D) indicate the beam’s polarization direction, i.e. x-polarized.
Fig. 3
Fig. 3 Numerical simulation for double slits with an incident dual Gaussian beam (A) Transverse spatial relation between double slits and dual Gaussian beam, (B)(C) Simulation results of the resultant right-propagating and left-propagating SPP wave intensity distribution with a controlled phase difference between the two SPP sources. The phase difference values are labelled in the lower left hand corner of the two figures.
Fig. 4
Fig. 4 Resultant SPP wave intensity distributions when incident dual Gaussian beams have different phase differences: (A) 0, (B) π/4, (C)π/2, (D) 3π/4, (E) π, (F) 5π/4, (G) 3π/2 and (H) 7π/4.
Fig. 5
Fig. 5 The intensity ratio of the right-propagating SPP to the left-propagating SPP (in decibel units) vs. phase difference between dual Gaussian beams.

Equations (7)

Equations on this page are rendered with MathJax. Learn more.

Δ ϕ R = ϕ 1 +d 2π λ spp ϕ 2
Δ ϕ L = ϕ 2 +d 2π λ spp ϕ 1 ,
Δ ϕ R =2Mπ
Δ ϕ L =( 2N+1 )π,
d=( M+N 2 + 1 4 ) λ spp .
ϕ 1 ϕ 2 =(MN 1 2 )π.
E dual (x,y,z;t)=E(xD/2 ,y,z;t) e i ϕ 1 ' +E(x+D/2 ,y,z;t) e i ϕ 2 ' ,

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