Abstract

A mirror structure that enables the polarization of linearly polarized light to be rotated by 90° over the entire visible region of the spectrum is presented. Theoretical modeling is used to show that this phenomenon occurs for light that is normally incident upon a metal grating consisting of a series of high and narrow ridges that are oriented at 45° to the polarization angle. This broad polarization-conversion band is shown to arise from mode mixing of surface plasmon polariton-mediated polarization-conversion bands and interference-mediated polarization-conversion bands.

© 2002 Optical Society of America

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References

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  1. S. J. Elston, G. P. Bryan-Brown, and J. R. Sambles, Phys. Rev. B 44, 6393 (1991).
    [CrossRef]
  2. R. A. Depine and M. Lester, J. Mod. Opt. 48, 1405 (2001).
    [CrossRef]
  3. R. A. Watts and J. R. Sambles, Opt. Commun. 140, 179 (1997).
    [CrossRef]
  4. H. Raether, Surface Plasmons (Springer-Verlag, Berlin, 1988).
  5. J. Chandezon, M. T. Dupuis, G. Cornnet, and D. Maystre, J. Opt. Soc. Am. 72, 839 (1982).
  6. J. B. Harris, T. W. Preist, E. L. Wood, and J. R. Sambles, J. Opt. Soc. Am. A 13, 2041 (1996).
    [CrossRef]
  7. W. L. Barnes, S. C. Kitson, T. W. Preist, and J. R. Sambles, J. Opt. Soc. Am. A 14, 1654 (1997).
    [CrossRef]

2001 (1)

R. A. Depine and M. Lester, J. Mod. Opt. 48, 1405 (2001).
[CrossRef]

1997 (2)

1996 (1)

1991 (1)

S. J. Elston, G. P. Bryan-Brown, and J. R. Sambles, Phys. Rev. B 44, 6393 (1991).
[CrossRef]

1982 (1)

Barnes, W. L.

Bryan-Brown, G. P.

S. J. Elston, G. P. Bryan-Brown, and J. R. Sambles, Phys. Rev. B 44, 6393 (1991).
[CrossRef]

Chandezon, J.

Cornnet, G.

Depine, R. A.

R. A. Depine and M. Lester, J. Mod. Opt. 48, 1405 (2001).
[CrossRef]

Dupuis, M. T.

Elston, S. J.

S. J. Elston, G. P. Bryan-Brown, and J. R. Sambles, Phys. Rev. B 44, 6393 (1991).
[CrossRef]

Harris, J. B.

Kitson, S. C.

Lester, M.

R. A. Depine and M. Lester, J. Mod. Opt. 48, 1405 (2001).
[CrossRef]

Maystre, D.

Preist, T. W.

Raether, H.

H. Raether, Surface Plasmons (Springer-Verlag, Berlin, 1988).

Sambles, J. R.

Watts, R. A.

R. A. Watts and J. R. Sambles, Opt. Commun. 140, 179 (1997).
[CrossRef]

Wood, E. L.

J. Mod. Opt. (1)

R. A. Depine and M. Lester, J. Mod. Opt. 48, 1405 (2001).
[CrossRef]

J. Opt. Soc. Am. (1)

J. Opt. Soc. Am. A (2)

Opt. Commun. (1)

R. A. Watts and J. R. Sambles, Opt. Commun. 140, 179 (1997).
[CrossRef]

Phys. Rev. B (1)

S. J. Elston, G. P. Bryan-Brown, and J. R. Sambles, Phys. Rev. B 44, 6393 (1991).
[CrossRef]

Other (1)

H. Raether, Surface Plasmons (Springer-Verlag, Berlin, 1988).

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Figures (4)

Fig. 1
Fig. 1

Example of a grating profile consisting of a series of a Gaussian ridges. In this case λg=200 nm, d=250 nm, and w=40 nm.

Fig. 2
Fig. 2

Polarization-converted reflectivity from a 200-nm-pitch silver grating consisting of a series of 60-nm-wide Gaussian ridges at a 45° azimuthal angle as a function of frequency and peak height. Also shown is the simple 1/d dispersion for the interference-mediated polarization-conversion mode.

Fig. 3
Fig. 3

Reflectivity from a 300-nm-pitch silver grating consisting of a series of 60-nm-wide Gaussian ridges at a 45° azimuthal angle. (a) Polarization-converted reflectivity as a function of frequency and peak height and (b) reflectivity as a function of wavelength for d=265 nm.

Fig. 4
Fig. 4

Reflectivity from a 250-nm-pitch silver grating consisting of a series of 50-nm-wide Gaussian ridges at a 45° azimuthal angle. Silver permittivity is described by a polynomial fitted to experimentally determined values. (a) Polarization-converted reflectivity as a function of frequency and peak height and (b) reflectivity as a function of wavelength for d=240 nm.

Equations (2)

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f=c2n-14d cos θ,
fx= a0 sinkgx+ϕ1+a1 sin2kgx+ϕ2+,

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