Abstract

The propagation range of surface plasmons in thin-metal-film geometries can be considerably increased if a suitable dielectric layer is placed in parallel to the film. The results show that this range extension depends strongly on the separation between the metal film and the dielectric layer.

© 1987 Optical Society of America

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References

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  1. M. Fukui, V. E. Y. So, R. Normandin, Phys. Status Solidi B 91, K61 (1979).
    [CrossRef]
  2. D. Sarid, Phys. Rev. Lett. 47, 1927 (1981).
    [CrossRef]
  3. G. I. Stegeman, J. J. Burke, D. G. Hall, Appl. Phys. Lett. 41, 906 (1982).
    [CrossRef]
  4. D. Sarid, R. T. Deck, A. E. Craig, R. K. Hickernell, R. S. Jameson, J. J. Fasano, Appl. Opt. 21, 3993 (1982).
    [CrossRef] [PubMed]
  5. G. I. Stegeman, J. J. Burke, Appl. Phys. Lett. 43, 221 (1982).
    [CrossRef]
  6. L. Wendler, R. Haupt, J. Appl. Phys. 59, 3289 (1986).
    [CrossRef]
  7. T. Tamir, F. Y. Kou, IEEE J. Quantum Electron. QE-22544 (1986).
    [CrossRef]

1986 (2)

L. Wendler, R. Haupt, J. Appl. Phys. 59, 3289 (1986).
[CrossRef]

T. Tamir, F. Y. Kou, IEEE J. Quantum Electron. QE-22544 (1986).
[CrossRef]

1982 (3)

G. I. Stegeman, J. J. Burke, D. G. Hall, Appl. Phys. Lett. 41, 906 (1982).
[CrossRef]

D. Sarid, R. T. Deck, A. E. Craig, R. K. Hickernell, R. S. Jameson, J. J. Fasano, Appl. Opt. 21, 3993 (1982).
[CrossRef] [PubMed]

G. I. Stegeman, J. J. Burke, Appl. Phys. Lett. 43, 221 (1982).
[CrossRef]

1981 (1)

D. Sarid, Phys. Rev. Lett. 47, 1927 (1981).
[CrossRef]

1979 (1)

M. Fukui, V. E. Y. So, R. Normandin, Phys. Status Solidi B 91, K61 (1979).
[CrossRef]

Burke, J. J.

G. I. Stegeman, J. J. Burke, D. G. Hall, Appl. Phys. Lett. 41, 906 (1982).
[CrossRef]

G. I. Stegeman, J. J. Burke, Appl. Phys. Lett. 43, 221 (1982).
[CrossRef]

Craig, A. E.

Deck, R. T.

Fasano, J. J.

Fukui, M.

M. Fukui, V. E. Y. So, R. Normandin, Phys. Status Solidi B 91, K61 (1979).
[CrossRef]

Hall, D. G.

G. I. Stegeman, J. J. Burke, D. G. Hall, Appl. Phys. Lett. 41, 906 (1982).
[CrossRef]

Haupt, R.

L. Wendler, R. Haupt, J. Appl. Phys. 59, 3289 (1986).
[CrossRef]

Hickernell, R. K.

Jameson, R. S.

Kou, F. Y.

T. Tamir, F. Y. Kou, IEEE J. Quantum Electron. QE-22544 (1986).
[CrossRef]

Normandin, R.

M. Fukui, V. E. Y. So, R. Normandin, Phys. Status Solidi B 91, K61 (1979).
[CrossRef]

Sarid, D.

So, V. E. Y.

M. Fukui, V. E. Y. So, R. Normandin, Phys. Status Solidi B 91, K61 (1979).
[CrossRef]

Stegeman, G. I.

G. I. Stegeman, J. J. Burke, D. G. Hall, Appl. Phys. Lett. 41, 906 (1982).
[CrossRef]

G. I. Stegeman, J. J. Burke, Appl. Phys. Lett. 43, 221 (1982).
[CrossRef]

Tamir, T.

T. Tamir, F. Y. Kou, IEEE J. Quantum Electron. QE-22544 (1986).
[CrossRef]

Wendler, L.

L. Wendler, R. Haupt, J. Appl. Phys. 59, 3289 (1986).
[CrossRef]

Appl. Opt. (1)

Appl. Phys. Lett. (2)

G. I. Stegeman, J. J. Burke, Appl. Phys. Lett. 43, 221 (1982).
[CrossRef]

G. I. Stegeman, J. J. Burke, D. G. Hall, Appl. Phys. Lett. 41, 906 (1982).
[CrossRef]

IEEE J. Quantum Electron. (1)

T. Tamir, F. Y. Kou, IEEE J. Quantum Electron. QE-22544 (1986).
[CrossRef]

J. Appl. Phys. (1)

L. Wendler, R. Haupt, J. Appl. Phys. 59, 3289 (1986).
[CrossRef]

Phys. Rev. Lett. (1)

D. Sarid, Phys. Rev. Lett. 47, 1927 (1981).
[CrossRef]

Phys. Status Solidi B (1)

M. Fukui, V. E. Y. So, R. Normandin, Phys. Status Solidi B 91, K61 (1979).
[CrossRef]

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Figures (4)

Fig. 1
Fig. 1

Geometries for (a) a plasmon mode on a thin metal film, (b) a surface wave guided by a dielectric layer, and (c) surface plasmon waves on a composite configuration. The hatched profiles indicate the variation of the field Ex for refractive indices satisfying n5 > n3 > n1 > n0 = n2 = n4.

Fig. 2
Fig. 2

Variation of |r(θ)| with incidence angle θ for the composite geometry shown in the insert. To improve clarity, the various thicknesses tj are not drawn to scale.

Fig. 3
Fig. 3

Variation of the power density Px versus z for (a) the conventional plasmon mode in the absence of a dielectric layer and for (b) the ordinary and (c) the extended plasmon mode in the geometry of Fig. 2.

Fig. 4
Fig. 4

Variation of (a) Le/Lo and (b) Pe/P0 versus t2, all other dimensions being as shown in Fig. 2. The solid lines refer to lossless dielectrics, whereas the dashed lines were calculated for lossy media characterized by complex values n0 = n2 = n4 = 1.5 (1 + i3.87 × 10−7) and n1 = 1.732 (1 + i3.37 × 10−7).

Equations (3)

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E x j = [ A j exp ( i k τ j z ) + B j exp ( i k τ j z ) ] exp ( i k κ x ) ,
r ( θ ) = N ( θ ) / D ( θ ) .
τ j = ( n j 2 κ 2 ) 1 / 2

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