Abstract

A comprehensive system with a high speed is built for imaging the terahertz (THz) surface plasmon polaritons (SPPs). Both the amplitude and the phase information of the focusing THz-SPPs excited by a semicircular plasmonic lens are achieved by using this system. The amplitude images present the focusing profiles of the THz-SPPs with different frequencies and the phase images reveal the Gouy phase shift as the THz-SPPs evolving through the focus. The simulations are also performed and a good agreement between the experimental and simulated results has been found.

© 2014 Optical Society of America

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2013 (6)

2011 (3)

Z. Fang, Q. Peng, W. Song, F. Hao, J. Wang, P. Nordlander, and X. Zhu, “Plasmonic focusing in symmetry broken nanocorrals,” Nano Lett. 11(2), 893–897 (2011).
[CrossRef] [PubMed]

P. S. Tan, G. H. Yuan, Q. Wang, N. Zhang, D. H. Zhang, and X. C. Yuan, “Phase singularity of surface plasmon polaritons generated by optical vortices,” Opt. Lett. 36(16), 3287–3289 (2011).
[CrossRef] [PubMed]

T. Zentgraf, Y. M. Liu, M. H. Mikkelsen, J. Valentine, and X. Zhang, “Plasmonic Luneburg and Eaton lenses,” Nat. Nanotechnol. 6(3), 151–155 (2011).
[CrossRef] [PubMed]

2010 (4)

J. B. Lassiter, H. Sobhani, J. A. Fan, J. Kundu, F. Capasso, P. Nordlander, and N. J. Halas, “Fano resonances in plasmonic nanoclusters: geometrical and chemical tunability,” Nano Lett. 10(8), 3184–3189 (2010).
[CrossRef] [PubMed]

H. Kim, J. Park, S. W. Cho, S. Y. Lee, M. Kang, and B. Lee, “Synthesis and dynamic switching of surface plasmon vortices with plasmonic vortex lens,” Nano Lett. 10(2), 529–536 (2010).
[CrossRef] [PubMed]

X. K. Wang, Y. Cui, W. Sun, J. S. Ye, and Y. Zhang, “Terahertz real-time imaging with balanced electro-optic detection,” Opt. Commun. 283(23), 4626–4632 (2010).
[CrossRef]

C. A. Werley, Q. Wu, K.-H. Lin, C. R. Tait, A. Dorn, and K. A. Nelson, “Comparison of phase-sensitive imaging techniques for studying terahertz waves in structured LiNbO3,” J. Opt. Soc. Am. B 27(11), 2350–2359 (2010).
[CrossRef]

2009 (1)

S. Vedantam, H. Lee, J. Tang, J. Conway, M. Staffaroni, and E. Yablonovitch, “A plasmonic dimple lens for nanoscale focusing of light,” Nano Lett. 9(10), 3447–3452 (2009).
[CrossRef] [PubMed]

2008 (2)

C. R. Williams, S. R. Andrews, S. A. Maier, A. I. Fernández-Domínguez, L. Martín-Moreno, and F. J. García-Vidal, “Highly confined guiding of terahertz surface plasmon polaritons on structured metal surfaces,” Nat. Photon. 2(3), 175–179 (2008).
[CrossRef]

A. J. L. Adam, J. M. Brok, M. A. Seo, K. J. Ahn, D. S. Kim, J. H. Kang, Q. H. Park, M. Nagel, and P. C. M. Planken, “Advanced terahertz electric near-field measurements at sub-wavelength diameter metallic apertures,” Opt. Express 16(10), 7407–7417 (2008).
[CrossRef] [PubMed]

2007 (4)

2006 (1)

T.-I. Jeon and D. Grischkowsky, “THz Zenneck surface wave (THz surface plasmon) propagation on a metal sheet,” Appl. Phys. Lett. 88(6), 061113 (2006).
[CrossRef]

2005 (1)

N. Fang, H. Lee, C. Sun, and X. Zhang, “Sub-diffraction-limited optical imaging with a silver superlens,” Science 308(5721), 534–537 (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]

H. T. Chen, R. Kersting, and G. C. Cho, “Terahertz imaging with nanometer resolution,” Appl. Phys. Lett. 83(15), 3009–3011 (2003).
[CrossRef]

2002 (1)

H. Ditlbacher, J. R. Krenn, G. Schider, A. Leitner, and F. R. Aussenegg, “Two-dimensional optics with surface plasmon polaritons,” Appl. Phys. Lett. 81(10), 1762 (2002).
[CrossRef]

1990 (1)

M. van Exter and D. Grischkowsky, “Characterization of an optoelectronic terahertz beam system,” IEEE Trans. Microw. Theory Tech. 38(11), 1684–1691 (1990).
[CrossRef]

Adam, A. J. L.

Agrawal, A.

Ahn, K. J.

Andrews, S. R.

C. R. Williams, S. R. Andrews, S. A. Maier, A. I. Fernández-Domínguez, L. Martín-Moreno, and F. J. García-Vidal, “Highly confined guiding of terahertz surface plasmon polaritons on structured metal surfaces,” Nat. Photon. 2(3), 175–179 (2008).
[CrossRef]

Aussenegg, F. R.

H. Ditlbacher, J. R. Krenn, G. Schider, A. Leitner, and F. R. Aussenegg, “Two-dimensional optics with surface plasmon polaritons,” Appl. Phys. Lett. 81(10), 1762 (2002).
[CrossRef]

Barnes, W. L.

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

Bavil, M. A.

Bleckmann, F.

Bozhevolnyi, S. I.

V. S. Volkov, S. I. Bozhevolnyi, E. Devaux, J. Y. Laluet, and T. W. Ebbesen, “Wavelength selective nanophotonic components utilizing channel plasmon polaritons,” Nano Lett. 7(4), 880–884 (2007).
[CrossRef] [PubMed]

Brok, J. M.

Capasso, F.

J. B. Lassiter, H. Sobhani, J. A. Fan, J. Kundu, F. Capasso, P. Nordlander, and N. J. Halas, “Fano resonances in plasmonic nanoclusters: geometrical and chemical tunability,” Nano Lett. 10(8), 3184–3189 (2010).
[CrossRef] [PubMed]

Chen, H. T.

H. T. Chen, R. Kersting, and G. C. Cho, “Terahertz imaging with nanometer resolution,” Appl. Phys. Lett. 83(15), 3009–3011 (2003).
[CrossRef]

Cho, G. C.

H. T. Chen, R. Kersting, and G. C. Cho, “Terahertz imaging with nanometer resolution,” Appl. Phys. Lett. 83(15), 3009–3011 (2003).
[CrossRef]

Cho, S. W.

H. Kim, J. Park, S. W. Cho, S. Y. Lee, M. Kang, and B. Lee, “Synthesis and dynamic switching of surface plasmon vortices with plasmonic vortex lens,” Nano Lett. 10(2), 529–536 (2010).
[CrossRef] [PubMed]

Conway, J.

S. Vedantam, H. Lee, J. Tang, J. Conway, M. Staffaroni, and E. Yablonovitch, “A plasmonic dimple lens for nanoscale focusing of light,” Nano Lett. 9(10), 3447–3452 (2009).
[CrossRef] [PubMed]

Cui, Y.

X. K. Wang, W. F. Sun, Y. Cui, J. S. Ye, S. F. Feng, and Y. Zhang, “Complete presentation of the Gouy phase shift with the THz digital holography,” Opt. Express 21(2), 2337–2346 (2013).
[CrossRef] [PubMed]

X. K. Wang, Y. Cui, W. Sun, J. S. Ye, and Y. Zhang, “Terahertz real-time imaging with balanced electro-optic detection,” Opt. Commun. 283(23), 4626–4632 (2010).
[CrossRef]

Deng, Q. Z.

Dereux, A.

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

Devaux, E.

V. S. Volkov, S. I. Bozhevolnyi, E. Devaux, J. Y. Laluet, and T. W. Ebbesen, “Wavelength selective nanophotonic components utilizing channel plasmon polaritons,” Nano Lett. 7(4), 880–884 (2007).
[CrossRef] [PubMed]

Ditlbacher, H.

H. Ditlbacher, J. R. Krenn, G. Schider, A. Leitner, and F. R. Aussenegg, “Two-dimensional optics with surface plasmon polaritons,” Appl. Phys. Lett. 81(10), 1762 (2002).
[CrossRef]

Dorn, A.

Ebbesen, T. W.

V. S. Volkov, S. I. Bozhevolnyi, E. Devaux, J. Y. Laluet, and T. W. Ebbesen, “Wavelength selective nanophotonic components utilizing channel plasmon polaritons,” Nano Lett. 7(4), 880–884 (2007).
[CrossRef] [PubMed]

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

Fan, J. A.

J. B. Lassiter, H. Sobhani, J. A. Fan, J. Kundu, F. Capasso, P. Nordlander, and N. J. Halas, “Fano resonances in plasmonic nanoclusters: geometrical and chemical tunability,” Nano Lett. 10(8), 3184–3189 (2010).
[CrossRef] [PubMed]

Fang, N.

C. Zhao, Y. Liu, Y. Zhao, N. Fang, and T. J. Huang, “A reconfigurable plasmofluidic lens,” Nat. Commun. 4, 2305 (2013).
[CrossRef] [PubMed]

N. Fang, H. Lee, C. Sun, and X. Zhang, “Sub-diffraction-limited optical imaging with a silver superlens,” Science 308(5721), 534–537 (2005).
[CrossRef] [PubMed]

Fang, Z.

Z. Fang, Q. Peng, W. Song, F. Hao, J. Wang, P. Nordlander, and X. Zhu, “Plasmonic focusing in symmetry broken nanocorrals,” Nano Lett. 11(2), 893–897 (2011).
[CrossRef] [PubMed]

Feng, S.

Feng, S. F.

Fernández-Domínguez, A. I.

C. R. Williams, S. R. Andrews, S. A. Maier, A. I. Fernández-Domínguez, L. Martín-Moreno, and F. J. García-Vidal, “Highly confined guiding of terahertz surface plasmon polaritons on structured metal surfaces,” Nat. Photon. 2(3), 175–179 (2008).
[CrossRef]

Frohnhaus, J.

García-Vidal, F. J.

C. R. Williams, S. R. Andrews, S. A. Maier, A. I. Fernández-Domínguez, L. Martín-Moreno, and F. J. García-Vidal, “Highly confined guiding of terahertz surface plasmon polaritons on structured metal surfaces,” Nat. Photon. 2(3), 175–179 (2008).
[CrossRef]

Grischkowsky, D.

T.-I. Jeon and D. Grischkowsky, “THz Zenneck surface wave (THz surface plasmon) propagation on a metal sheet,” Appl. Phys. Lett. 88(6), 061113 (2006).
[CrossRef]

M. van Exter and D. Grischkowsky, “Characterization of an optoelectronic terahertz beam system,” IEEE Trans. Microw. Theory Tech. 38(11), 1684–1691 (1990).
[CrossRef]

Halas, N. J.

J. B. Lassiter, H. Sobhani, J. A. Fan, J. Kundu, F. Capasso, P. Nordlander, and N. J. Halas, “Fano resonances in plasmonic nanoclusters: geometrical and chemical tunability,” Nano Lett. 10(8), 3184–3189 (2010).
[CrossRef] [PubMed]

Hao, F.

Z. Fang, Q. Peng, W. Song, F. Hao, J. Wang, P. Nordlander, and X. Zhu, “Plasmonic focusing in symmetry broken nanocorrals,” Nano Lett. 11(2), 893–897 (2011).
[CrossRef] [PubMed]

He, J.

Hu, D.

Huang, T. J.

C. Zhao, Y. Liu, Y. Zhao, N. Fang, and T. J. Huang, “A reconfigurable plasmofluidic lens,” Nat. Commun. 4, 2305 (2013).
[CrossRef] [PubMed]

Jadidi, M. M.

Jeon, T.-I.

T.-I. Jeon and D. Grischkowsky, “THz Zenneck surface wave (THz surface plasmon) propagation on a metal sheet,” Appl. Phys. Lett. 88(6), 061113 (2006).
[CrossRef]

Jeoung, S. C.

Kan, Q.

Kang, J. H.

Kang, M.

H. Kim, J. Park, S. W. Cho, S. Y. Lee, M. Kang, and B. Lee, “Synthesis and dynamic switching of surface plasmon vortices with plasmonic vortex lens,” Nano Lett. 10(2), 529–536 (2010).
[CrossRef] [PubMed]

Kersting, R.

H. T. Chen, R. Kersting, and G. C. Cho, “Terahertz imaging with nanometer resolution,” Appl. Phys. Lett. 83(15), 3009–3011 (2003).
[CrossRef]

Kim, D. S.

Kim, H.

H. Kim, J. Park, S. W. Cho, S. Y. Lee, M. Kang, and B. Lee, “Synthesis and dynamic switching of surface plasmon vortices with plasmonic vortex lens,” Nano Lett. 10(2), 529–536 (2010).
[CrossRef] [PubMed]

Krenn, J. R.

H. Ditlbacher, J. R. Krenn, G. Schider, A. Leitner, and F. R. Aussenegg, “Two-dimensional optics with surface plasmon polaritons,” Appl. Phys. Lett. 81(10), 1762 (2002).
[CrossRef]

Kumar, G.

Kundu, J.

J. B. Lassiter, H. Sobhani, J. A. Fan, J. Kundu, F. Capasso, P. Nordlander, and N. J. Halas, “Fano resonances in plasmonic nanoclusters: geometrical and chemical tunability,” Nano Lett. 10(8), 3184–3189 (2010).
[CrossRef] [PubMed]

Laluet, J. Y.

V. S. Volkov, S. I. Bozhevolnyi, E. Devaux, J. Y. Laluet, and T. W. Ebbesen, “Wavelength selective nanophotonic components utilizing channel plasmon polaritons,” Nano Lett. 7(4), 880–884 (2007).
[CrossRef] [PubMed]

Lassiter, J. B.

J. B. Lassiter, H. Sobhani, J. A. Fan, J. Kundu, F. Capasso, P. Nordlander, and N. J. Halas, “Fano resonances in plasmonic nanoclusters: geometrical and chemical tunability,” Nano Lett. 10(8), 3184–3189 (2010).
[CrossRef] [PubMed]

Lee, B.

H. Kim, J. Park, S. W. Cho, S. Y. Lee, M. Kang, and B. Lee, “Synthesis and dynamic switching of surface plasmon vortices with plasmonic vortex lens,” Nano Lett. 10(2), 529–536 (2010).
[CrossRef] [PubMed]

Lee, H.

S. Vedantam, H. Lee, J. Tang, J. Conway, M. Staffaroni, and E. Yablonovitch, “A plasmonic dimple lens for nanoscale focusing of light,” Nano Lett. 9(10), 3447–3452 (2009).
[CrossRef] [PubMed]

N. Fang, H. Lee, C. Sun, and X. Zhang, “Sub-diffraction-limited optical imaging with a silver superlens,” Science 308(5721), 534–537 (2005).
[CrossRef] [PubMed]

Lee, J. W.

Lee, S. Y.

H. Kim, J. Park, S. W. Cho, S. Y. Lee, M. Kang, and B. Lee, “Synthesis and dynamic switching of surface plasmon vortices with plasmonic vortex lens,” Nano Lett. 10(2), 529–536 (2010).
[CrossRef] [PubMed]

Leitner, A.

H. Ditlbacher, J. R. Krenn, G. Schider, A. Leitner, and F. R. Aussenegg, “Two-dimensional optics with surface plasmon polaritons,” Appl. Phys. Lett. 81(10), 1762 (2002).
[CrossRef]

Li, S. S.

Lin, K.-H.

Linden, S.

Liu, Y.

C. Zhao, Y. Liu, Y. Zhao, N. Fang, and T. J. Huang, “A reconfigurable plasmofluidic lens,” Nat. Commun. 4, 2305 (2013).
[CrossRef] [PubMed]

Liu, Y. M.

T. Zentgraf, Y. M. Liu, M. H. Mikkelsen, J. Valentine, and X. Zhang, “Plasmonic Luneburg and Eaton lenses,” Nat. Nanotechnol. 6(3), 151–155 (2011).
[CrossRef] [PubMed]

Maier, S. A.

C. R. Williams, S. R. Andrews, S. A. Maier, A. I. Fernández-Domínguez, L. Martín-Moreno, and F. J. García-Vidal, “Highly confined guiding of terahertz surface plasmon polaritons on structured metal surfaces,” Nat. Photon. 2(3), 175–179 (2008).
[CrossRef]

Martín-Moreno, L.

C. R. Williams, S. R. Andrews, S. A. Maier, A. I. Fernández-Domínguez, L. Martín-Moreno, and F. J. García-Vidal, “Highly confined guiding of terahertz surface plasmon polaritons on structured metal surfaces,” Nat. Photon. 2(3), 175–179 (2008).
[CrossRef]

Mikkelsen, M. H.

T. Zentgraf, Y. M. Liu, M. H. Mikkelsen, J. Valentine, and X. Zhang, “Plasmonic Luneburg and Eaton lenses,” Nat. Nanotechnol. 6(3), 151–155 (2011).
[CrossRef] [PubMed]

Minovich, A.

Murphy, T. E.

Nagel, M.

Nahata, A.

Nelson, K. A.

Neshev, D. N.

Nordlander, P.

Z. Fang, Q. Peng, W. Song, F. Hao, J. Wang, P. Nordlander, and X. Zhu, “Plasmonic focusing in symmetry broken nanocorrals,” Nano Lett. 11(2), 893–897 (2011).
[CrossRef] [PubMed]

J. B. Lassiter, H. Sobhani, J. A. Fan, J. Kundu, F. Capasso, P. Nordlander, and N. J. Halas, “Fano resonances in plasmonic nanoclusters: geometrical and chemical tunability,” Nano Lett. 10(8), 3184–3189 (2010).
[CrossRef] [PubMed]

Park, J.

H. Kim, J. Park, S. W. Cho, S. Y. Lee, M. Kang, and B. Lee, “Synthesis and dynamic switching of surface plasmon vortices with plasmonic vortex lens,” Nano Lett. 10(2), 529–536 (2010).
[CrossRef] [PubMed]

Park, Q. H.

Peng, Q.

Z. Fang, Q. Peng, W. Song, F. Hao, J. Wang, P. Nordlander, and X. Zhu, “Plasmonic focusing in symmetry broken nanocorrals,” Nano Lett. 11(2), 893–897 (2011).
[CrossRef] [PubMed]

Planken, P. C. M.

Schider, G.

H. Ditlbacher, J. R. Krenn, G. Schider, A. Leitner, and F. R. Aussenegg, “Two-dimensional optics with surface plasmon polaritons,” Appl. Phys. Lett. 81(10), 1762 (2002).
[CrossRef]

Seo, M. A.

Sobhani, H.

J. B. Lassiter, H. Sobhani, J. A. Fan, J. Kundu, F. Capasso, P. Nordlander, and N. J. Halas, “Fano resonances in plasmonic nanoclusters: geometrical and chemical tunability,” Nano Lett. 10(8), 3184–3189 (2010).
[CrossRef] [PubMed]

Song, W.

Z. Fang, Q. Peng, W. Song, F. Hao, J. Wang, P. Nordlander, and X. Zhu, “Plasmonic focusing in symmetry broken nanocorrals,” Nano Lett. 11(2), 893–897 (2011).
[CrossRef] [PubMed]

Staffaroni, M.

S. Vedantam, H. Lee, J. Tang, J. Conway, M. Staffaroni, and E. Yablonovitch, “A plasmonic dimple lens for nanoscale focusing of light,” Nano Lett. 9(10), 3447–3452 (2009).
[CrossRef] [PubMed]

Sun, C.

N. Fang, H. Lee, C. Sun, and X. Zhang, “Sub-diffraction-limited optical imaging with a silver superlens,” Science 308(5721), 534–537 (2005).
[CrossRef] [PubMed]

Sun, W.

X. K. Wang, Y. Cui, W. Sun, J. S. Ye, and Y. Zhang, “Terahertz real-time imaging with balanced electro-optic detection,” Opt. Commun. 283(23), 4626–4632 (2010).
[CrossRef]

Sun, W. F.

Tait, C. R.

Tan, P. S.

Tang, J.

S. Vedantam, H. Lee, J. Tang, J. Conway, M. Staffaroni, and E. Yablonovitch, “A plasmonic dimple lens for nanoscale focusing of light,” Nano Lett. 9(10), 3447–3452 (2009).
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Valentine, J.

T. Zentgraf, Y. M. Liu, M. H. Mikkelsen, J. Valentine, and X. Zhang, “Plasmonic Luneburg and Eaton lenses,” Nat. Nanotechnol. 6(3), 151–155 (2011).
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M. van Exter and D. Grischkowsky, “Characterization of an optoelectronic terahertz beam system,” IEEE Trans. Microw. Theory Tech. 38(11), 1684–1691 (1990).
[CrossRef]

Vedantam, S.

S. Vedantam, H. Lee, J. Tang, J. Conway, M. Staffaroni, and E. Yablonovitch, “A plasmonic dimple lens for nanoscale focusing of light,” Nano Lett. 9(10), 3447–3452 (2009).
[CrossRef] [PubMed]

Volkov, V. S.

V. S. Volkov, S. I. Bozhevolnyi, E. Devaux, J. Y. Laluet, and T. W. Ebbesen, “Wavelength selective nanophotonic components utilizing channel plasmon polaritons,” Nano Lett. 7(4), 880–884 (2007).
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Wang, J.

Z. Fang, Q. Peng, W. Song, F. Hao, J. Wang, P. Nordlander, and X. Zhu, “Plasmonic focusing in symmetry broken nanocorrals,” Nano Lett. 11(2), 893–897 (2011).
[CrossRef] [PubMed]

Wang, Q.

Wang, X.

Wang, X. K.

X. K. Wang, W. F. Sun, Y. Cui, J. S. Ye, S. F. Feng, and Y. Zhang, “Complete presentation of the Gouy phase shift with the THz digital holography,” Opt. Express 21(2), 2337–2346 (2013).
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C. R. Williams, S. R. Andrews, S. A. Maier, A. I. Fernández-Domínguez, L. Martín-Moreno, and F. J. García-Vidal, “Highly confined guiding of terahertz surface plasmon polaritons on structured metal surfaces,” Nat. Photon. 2(3), 175–179 (2008).
[CrossRef]

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S. Vedantam, H. Lee, J. Tang, J. Conway, M. Staffaroni, and E. Yablonovitch, “A plasmonic dimple lens for nanoscale focusing of light,” Nano Lett. 9(10), 3447–3452 (2009).
[CrossRef] [PubMed]

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Ye, J. S.

X. K. Wang, W. F. Sun, Y. Cui, J. S. Ye, S. F. Feng, and Y. Zhang, “Complete presentation of the Gouy phase shift with the THz digital holography,” Opt. Express 21(2), 2337–2346 (2013).
[CrossRef] [PubMed]

X. K. Wang, Y. Cui, W. Sun, J. S. Ye, and Y. Zhang, “Terahertz real-time imaging with balanced electro-optic detection,” Opt. Commun. 283(23), 4626–4632 (2010).
[CrossRef]

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Yuan, X. C.

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T. Zentgraf, Y. M. Liu, M. H. Mikkelsen, J. Valentine, and X. Zhang, “Plasmonic Luneburg and Eaton lenses,” Nat. Nanotechnol. 6(3), 151–155 (2011).
[CrossRef] [PubMed]

Zhang, D. H.

Zhang, N.

Zhang, X.

T. Zentgraf, Y. M. Liu, M. H. Mikkelsen, J. Valentine, and X. Zhang, “Plasmonic Luneburg and Eaton lenses,” Nat. Nanotechnol. 6(3), 151–155 (2011).
[CrossRef] [PubMed]

N. Fang, H. Lee, C. Sun, and X. Zhang, “Sub-diffraction-limited optical imaging with a silver superlens,” Science 308(5721), 534–537 (2005).
[CrossRef] [PubMed]

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Zhao, C.

C. Zhao, Y. Liu, Y. Zhao, N. Fang, and T. J. Huang, “A reconfigurable plasmofluidic lens,” Nat. Commun. 4, 2305 (2013).
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C. Zhao, Y. Liu, Y. Zhao, N. Fang, and T. J. Huang, “A reconfigurable plasmofluidic lens,” Nat. Commun. 4, 2305 (2013).
[CrossRef] [PubMed]

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Zhu, W.

Zhu, W. Q.

Zhu, X.

Z. Fang, Q. Peng, W. Song, F. Hao, J. Wang, P. Nordlander, and X. Zhu, “Plasmonic focusing in symmetry broken nanocorrals,” Nano Lett. 11(2), 893–897 (2011).
[CrossRef] [PubMed]

Appl. Phys. Lett. (3)

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[CrossRef]

J. Opt. Soc. Am. B (1)

Nano Lett. (5)

H. Kim, J. Park, S. W. Cho, S. Y. Lee, M. Kang, and B. Lee, “Synthesis and dynamic switching of surface plasmon vortices with plasmonic vortex lens,” Nano Lett. 10(2), 529–536 (2010).
[CrossRef] [PubMed]

V. S. Volkov, S. I. Bozhevolnyi, E. Devaux, J. Y. Laluet, and T. W. Ebbesen, “Wavelength selective nanophotonic components utilizing channel plasmon polaritons,” Nano Lett. 7(4), 880–884 (2007).
[CrossRef] [PubMed]

Z. Fang, Q. Peng, W. Song, F. Hao, J. Wang, P. Nordlander, and X. Zhu, “Plasmonic focusing in symmetry broken nanocorrals,” Nano Lett. 11(2), 893–897 (2011).
[CrossRef] [PubMed]

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[CrossRef] [PubMed]

Nat. Commun. (1)

C. Zhao, Y. Liu, Y. Zhao, N. Fang, and T. J. Huang, “A reconfigurable plasmofluidic lens,” Nat. Commun. 4, 2305 (2013).
[CrossRef] [PubMed]

Nat. Nanotechnol. (1)

T. Zentgraf, Y. M. Liu, M. H. Mikkelsen, J. Valentine, and X. Zhang, “Plasmonic Luneburg and Eaton lenses,” Nat. Nanotechnol. 6(3), 151–155 (2011).
[CrossRef] [PubMed]

Nat. Photon. (1)

C. R. Williams, S. R. Andrews, S. A. Maier, A. I. Fernández-Domínguez, L. Martín-Moreno, and F. J. García-Vidal, “Highly confined guiding of terahertz surface plasmon polaritons on structured metal surfaces,” Nat. Photon. 2(3), 175–179 (2008).
[CrossRef]

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W. L. Barnes, A. Dereux, and T. W. Ebbesen, “Surface plasmon subwavelength optics,” Nature 424(6950), 824–830 (2003).
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Opt. Commun. (1)

X. K. Wang, Y. Cui, W. Sun, J. S. Ye, and Y. Zhang, “Terahertz real-time imaging with balanced electro-optic detection,” Opt. Commun. 283(23), 4626–4632 (2010).
[CrossRef]

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J. He, X. Wang, D. Hu, J. Ye, S. Feng, Q. Kan, and Y. Zhang, “Generation and evolution of the terahertz vortex beam,” Opt. Express 21(17), 20230–20239 (2013).
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X. K. Wang, W. F. Sun, Y. Cui, J. S. Ye, S. F. Feng, and Y. Zhang, “Complete presentation of the Gouy phase shift with the THz digital holography,” Opt. Express 21(2), 2337–2346 (2013).
[CrossRef] [PubMed]

Opt. Lett. (2)

Science (1)

N. Fang, H. Lee, C. Sun, and X. Zhang, “Sub-diffraction-limited optical imaging with a silver superlens,” Science 308(5721), 534–537 (2005).
[CrossRef] [PubMed]

Other (1)

S. A. Maier, Plasmonics: Fundamentals and Applications (Springer, 2007).

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Figures (6)

Fig. 1
Fig. 1

Schematic diagram of the plasmonic lens (a) and the experimental setup (b) for imaging the THz-SPPs. The generated THz-SPPs propagate along the x-axis in the vicinity of the foil. A quarter wave plate (QWP), a Wollaston prism (WP), and a CCD camera are used for the differential detection. The ZnTe crystal is mounted on a one-dimensional positioning stage and auto-scanned along the x-axis.

Fig. 2
Fig. 2

The simulated amplitude images of the THz-SPPs. (a)-(c) are the amplitude images of Ex, Ey, and Ez, respectively. (d) is the amplitude distribution along the cut line x = 0 of (a)-(c).

Fig. 3
Fig. 3

(a) The maximum amplitude image of the THz-SPPs. (b) The temporal signals of the THz-SPPs measured at y = −1 mm, −0.5 mm, 0 mm, 0.5 mm, and 1 mm along the x = 0 direction which is indicated by the white arrow in (a).

Fig. 4
Fig. 4

Experimental (a) and simulated (b) amplitude images for the 0.73 THz THz-SPPs, respectively. (c) and (d) are the normalized transverse and longitudinal amplitude profiles.

Fig. 5
Fig. 5

Experimental amplitude images for the 0.3 THz (a) and 0.2 THz (b) THz-SPPs and simulated amplitude images for the 0.3 THz (c) and 0.2 THz (d) THz-SPPs, respectively. (e) and (f) are the comparison of the normalized transverse amplitude profiles of the 0.3 THz and 0.2 THz THz-SPPs.

Fig. 6
Fig. 6

Experimental phase images of the THz-SPPs with frequencies of 0.73 THz (a), 0.3THz (c) and 0.2THz (e). The simulated phase images for the 0.73 THz (b), 0.3THz (d) and 0.2THz (f) THz-SPPs. The experimental (g) and simulated (h) longitudinal phase distributions for THz-SPPs with different frequencies.

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