Abstract

The spin dependence of the focusing behavior of a spiral slot plasmonic lens can be utilized for a miniature circular polarization analyzer. However, the azimuthal polarization component of the incident circular polarization does not contribute to surface plasmon excitation and focusing because it is TE polarized with respect to the spiral slot. In this Letter, a hybrid metallic lens that consists of alternating spiral triangle array and spiral slot is designed to improve the plasmonic coupling efficiency. The spiral triangle array is responsible for coupling the azimuthal polarization component into surface plasmon. Numerical studies show that the field enhancement at the focus and power conversion efficiency can be increased by 39.53% and 94.69% compared to that of pure spiral slot plasmonic lens.

© 2012 Optical Society of America

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References

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  1. D. K. Gramotnev and S. I. Bozhevolnyi, Nat. Photon. 4, 83 (2010).
    [CrossRef]
  2. J. A. Schuller, E. S. Barnard, W. Cai, Y. C. Jun, J. S. White, and M. L. Brongersma, Nat. Mater. 9, 193 (2010).
    [CrossRef]
  3. W. Chen and Q. Zhan, Opt. Lett. 34, 722 (2009).
    [CrossRef]
  4. G. M. Lerman, A. Yanai, and U. Levy, Nano Lett. 9, 2129 (2009).
    [CrossRef]
  5. W. Chen, D. C. Abeysinghe, R. L. Nelson, and Q. Zhan, Nano Lett. 9, 4320 (2009).
    [CrossRef]
  6. Q. Zhan, Adv. Opt. Photon. 1, 1 (2009).
    [CrossRef]
  7. S. Yang, W. Chen, R. L. Nelson, and Q. Zhan, Opt. Lett. 34, 3047 (2009).
    [CrossRef]
  8. W. Chen, D. C. Abeysinghe, R. L. Nelson, and Q. Zhan, Nano Lett. 10, 2075 (2010).
    [CrossRef]
  9. Z. Wu, W. Chen, D. C. Abeysinghe, R. L. Nelson, and Q. Zhan, Opt. Lett. 35, 1755 (2010).
    [CrossRef]
  10. W. Chen, R. L. Nelson, and Q. Zhan, Opt. Lett. 37, 581 (2012).
    [CrossRef]
  11. E. D. Palik, Handbook of Optical Constants of Solids(Academic, 1998).

2012 (1)

2010 (4)

Z. Wu, W. Chen, D. C. Abeysinghe, R. L. Nelson, and Q. Zhan, Opt. Lett. 35, 1755 (2010).
[CrossRef]

D. K. Gramotnev and S. I. Bozhevolnyi, Nat. Photon. 4, 83 (2010).
[CrossRef]

J. A. Schuller, E. S. Barnard, W. Cai, Y. C. Jun, J. S. White, and M. L. Brongersma, Nat. Mater. 9, 193 (2010).
[CrossRef]

W. Chen, D. C. Abeysinghe, R. L. Nelson, and Q. Zhan, Nano Lett. 10, 2075 (2010).
[CrossRef]

2009 (5)

Q. Zhan, Adv. Opt. Photon. 1, 1 (2009).
[CrossRef]

W. Chen and Q. Zhan, Opt. Lett. 34, 722 (2009).
[CrossRef]

S. Yang, W. Chen, R. L. Nelson, and Q. Zhan, Opt. Lett. 34, 3047 (2009).
[CrossRef]

G. M. Lerman, A. Yanai, and U. Levy, Nano Lett. 9, 2129 (2009).
[CrossRef]

W. Chen, D. C. Abeysinghe, R. L. Nelson, and Q. Zhan, Nano Lett. 9, 4320 (2009).
[CrossRef]

Abeysinghe, D. C.

W. Chen, D. C. Abeysinghe, R. L. Nelson, and Q. Zhan, Nano Lett. 10, 2075 (2010).
[CrossRef]

Z. Wu, W. Chen, D. C. Abeysinghe, R. L. Nelson, and Q. Zhan, Opt. Lett. 35, 1755 (2010).
[CrossRef]

W. Chen, D. C. Abeysinghe, R. L. Nelson, and Q. Zhan, Nano Lett. 9, 4320 (2009).
[CrossRef]

Barnard, E. S.

J. A. Schuller, E. S. Barnard, W. Cai, Y. C. Jun, J. S. White, and M. L. Brongersma, Nat. Mater. 9, 193 (2010).
[CrossRef]

Bozhevolnyi, S. I.

D. K. Gramotnev and S. I. Bozhevolnyi, Nat. Photon. 4, 83 (2010).
[CrossRef]

Brongersma, M. L.

J. A. Schuller, E. S. Barnard, W. Cai, Y. C. Jun, J. S. White, and M. L. Brongersma, Nat. Mater. 9, 193 (2010).
[CrossRef]

Cai, W.

J. A. Schuller, E. S. Barnard, W. Cai, Y. C. Jun, J. S. White, and M. L. Brongersma, Nat. Mater. 9, 193 (2010).
[CrossRef]

Chen, W.

Gramotnev, D. K.

D. K. Gramotnev and S. I. Bozhevolnyi, Nat. Photon. 4, 83 (2010).
[CrossRef]

Jun, Y. C.

J. A. Schuller, E. S. Barnard, W. Cai, Y. C. Jun, J. S. White, and M. L. Brongersma, Nat. Mater. 9, 193 (2010).
[CrossRef]

Lerman, G. M.

G. M. Lerman, A. Yanai, and U. Levy, Nano Lett. 9, 2129 (2009).
[CrossRef]

Levy, U.

G. M. Lerman, A. Yanai, and U. Levy, Nano Lett. 9, 2129 (2009).
[CrossRef]

Nelson, R. L.

Palik, E. D.

E. D. Palik, Handbook of Optical Constants of Solids(Academic, 1998).

Schuller, J. A.

J. A. Schuller, E. S. Barnard, W. Cai, Y. C. Jun, J. S. White, and M. L. Brongersma, Nat. Mater. 9, 193 (2010).
[CrossRef]

White, J. S.

J. A. Schuller, E. S. Barnard, W. Cai, Y. C. Jun, J. S. White, and M. L. Brongersma, Nat. Mater. 9, 193 (2010).
[CrossRef]

Wu, Z.

Yanai, A.

G. M. Lerman, A. Yanai, and U. Levy, Nano Lett. 9, 2129 (2009).
[CrossRef]

Yang, S.

Zhan, Q.

Adv. Opt. Photon. (1)

Nano Lett. (3)

G. M. Lerman, A. Yanai, and U. Levy, Nano Lett. 9, 2129 (2009).
[CrossRef]

W. Chen, D. C. Abeysinghe, R. L. Nelson, and Q. Zhan, Nano Lett. 9, 4320 (2009).
[CrossRef]

W. Chen, D. C. Abeysinghe, R. L. Nelson, and Q. Zhan, Nano Lett. 10, 2075 (2010).
[CrossRef]

Nat. Mater. (1)

J. A. Schuller, E. S. Barnard, W. Cai, Y. C. Jun, J. S. White, and M. L. Brongersma, Nat. Mater. 9, 193 (2010).
[CrossRef]

Nat. Photon. (1)

D. K. Gramotnev and S. I. Bozhevolnyi, Nat. Photon. 4, 83 (2010).
[CrossRef]

Opt. Lett. (4)

Other (1)

E. D. Palik, Handbook of Optical Constants of Solids(Academic, 1998).

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Figures (3)

Fig. 1.
Fig. 1.

(a) Logarithmic electric energy density distribution at the air/silver interface of a spiral triangle array with right-, and (b) left-handed circularly polarized illuminations. (c) Circular polarization extinction ratio versus the detector size.

Fig. 2.
Fig. 2.

(a) Logarithmic electric energy density distribution at the air/silver interface of alternating spiral triangle array and spiral slot lens with right-, and (b) left-handed circularly polarized illuminations. (c) Circular polarization extinction ratio versus the detector size.

Fig. 3.
Fig. 3.

Field enhancement at the focus with respect to the spacing between the spiral triangle array and spiral slot.

Metrics