Abstract

I comment on the recent paper by Setälä et al. [J. Opt. Soc. Am. A 18, 678 (2001)]. In that paper the calculation is entirely and exactly adopted from our previous work except the evanescent-field propagator. I shall demonstrate that the replacement of the propagator flaws the calculation. In their paper the numerical results show rich subwavelength information at absolute far-field distances (four times larger than the wavelength). I shall point out that the evanescent resolution at far-field distances cannot be of subwavelength. In the paper by Setälä et al. the description of previous work is inaccurate and misleading. I shall give what I consider to be the correct guidelines for readers to learn about the standing controversy regarding the evanescent field of a dipole.

© 2002 Optical Society of America

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References

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  1. T. Setälä, M. Kaivola, A. T. Friberg, “Evanescent and propagating electromagnetic fields in scattering from point-dipole structures,” J. Opt. Soc. Am. A 18, 678–688 (2001).
    [CrossRef]
  2. T. Setälä, A. T. Friberg, M. Kaivola, “Decomposition of the point-dipole field into homogeneous and evanescent parts,” Phys. Rev. E 59, 1200–1206 (1999).
    [CrossRef]
  3. M. Xiao, “On near-field scanning optical microscopy: homogeneous and evanescent radiation,” J. Mod. Opt. 44, 327–344 (1997).
    [CrossRef]
  4. See Ref. 1, Refs. 9–15.
  5. O. Keller, M. Xiao, S. Bozhevolnyi, “Configura-tional resonances in optical near-field microscopy: a rigorous point-dipole approach,” Surf. Sci. 280, 217–230 (1993).
    [CrossRef]
  6. M. Xiao, “Two-point optical resolution with homogeneous, evanescent and self field: Resolution criterion in near field imaging,” J. Mod. Opt. 44, 1609–1615 (1997).
    [CrossRef]
  7. M. Xiao, “On the evanescent field of dipole,” J. Mod. Opt. 47, 765–768 (2000).
  8. M. Xiao, “Optical fiber tip in front of a phase conjugator: focused light spot with inclusion of evanescent field contribution,” Appl. Phys. A 64, 91–99 (1997).
    [CrossRef]
  9. O. Keller, “Attached and radiated electromagnetic fields of an electric point dipole,” J. Opt. Soc. Am. B 16, 835–847 (1999).
    [CrossRef]

2001 (1)

2000 (1)

M. Xiao, “On the evanescent field of dipole,” J. Mod. Opt. 47, 765–768 (2000).

1999 (2)

O. Keller, “Attached and radiated electromagnetic fields of an electric point dipole,” J. Opt. Soc. Am. B 16, 835–847 (1999).
[CrossRef]

T. Setälä, A. T. Friberg, M. Kaivola, “Decomposition of the point-dipole field into homogeneous and evanescent parts,” Phys. Rev. E 59, 1200–1206 (1999).
[CrossRef]

1997 (3)

M. Xiao, “On near-field scanning optical microscopy: homogeneous and evanescent radiation,” J. Mod. Opt. 44, 327–344 (1997).
[CrossRef]

M. Xiao, “Two-point optical resolution with homogeneous, evanescent and self field: Resolution criterion in near field imaging,” J. Mod. Opt. 44, 1609–1615 (1997).
[CrossRef]

M. Xiao, “Optical fiber tip in front of a phase conjugator: focused light spot with inclusion of evanescent field contribution,” Appl. Phys. A 64, 91–99 (1997).
[CrossRef]

1993 (1)

O. Keller, M. Xiao, S. Bozhevolnyi, “Configura-tional resonances in optical near-field microscopy: a rigorous point-dipole approach,” Surf. Sci. 280, 217–230 (1993).
[CrossRef]

Bozhevolnyi, S.

O. Keller, M. Xiao, S. Bozhevolnyi, “Configura-tional resonances in optical near-field microscopy: a rigorous point-dipole approach,” Surf. Sci. 280, 217–230 (1993).
[CrossRef]

Friberg, A. T.

T. Setälä, M. Kaivola, A. T. Friberg, “Evanescent and propagating electromagnetic fields in scattering from point-dipole structures,” J. Opt. Soc. Am. A 18, 678–688 (2001).
[CrossRef]

T. Setälä, A. T. Friberg, M. Kaivola, “Decomposition of the point-dipole field into homogeneous and evanescent parts,” Phys. Rev. E 59, 1200–1206 (1999).
[CrossRef]

Kaivola, M.

T. Setälä, M. Kaivola, A. T. Friberg, “Evanescent and propagating electromagnetic fields in scattering from point-dipole structures,” J. Opt. Soc. Am. A 18, 678–688 (2001).
[CrossRef]

T. Setälä, A. T. Friberg, M. Kaivola, “Decomposition of the point-dipole field into homogeneous and evanescent parts,” Phys. Rev. E 59, 1200–1206 (1999).
[CrossRef]

Keller, O.

O. Keller, “Attached and radiated electromagnetic fields of an electric point dipole,” J. Opt. Soc. Am. B 16, 835–847 (1999).
[CrossRef]

O. Keller, M. Xiao, S. Bozhevolnyi, “Configura-tional resonances in optical near-field microscopy: a rigorous point-dipole approach,” Surf. Sci. 280, 217–230 (1993).
[CrossRef]

Setälä, T.

T. Setälä, M. Kaivola, A. T. Friberg, “Evanescent and propagating electromagnetic fields in scattering from point-dipole structures,” J. Opt. Soc. Am. A 18, 678–688 (2001).
[CrossRef]

T. Setälä, A. T. Friberg, M. Kaivola, “Decomposition of the point-dipole field into homogeneous and evanescent parts,” Phys. Rev. E 59, 1200–1206 (1999).
[CrossRef]

Xiao, M.

M. Xiao, “On the evanescent field of dipole,” J. Mod. Opt. 47, 765–768 (2000).

M. Xiao, “On near-field scanning optical microscopy: homogeneous and evanescent radiation,” J. Mod. Opt. 44, 327–344 (1997).
[CrossRef]

M. Xiao, “Two-point optical resolution with homogeneous, evanescent and self field: Resolution criterion in near field imaging,” J. Mod. Opt. 44, 1609–1615 (1997).
[CrossRef]

M. Xiao, “Optical fiber tip in front of a phase conjugator: focused light spot with inclusion of evanescent field contribution,” Appl. Phys. A 64, 91–99 (1997).
[CrossRef]

O. Keller, M. Xiao, S. Bozhevolnyi, “Configura-tional resonances in optical near-field microscopy: a rigorous point-dipole approach,” Surf. Sci. 280, 217–230 (1993).
[CrossRef]

Appl. Phys. A (1)

M. Xiao, “Optical fiber tip in front of a phase conjugator: focused light spot with inclusion of evanescent field contribution,” Appl. Phys. A 64, 91–99 (1997).
[CrossRef]

J. Mod. Opt. (3)

M. Xiao, “Two-point optical resolution with homogeneous, evanescent and self field: Resolution criterion in near field imaging,” J. Mod. Opt. 44, 1609–1615 (1997).
[CrossRef]

M. Xiao, “On the evanescent field of dipole,” J. Mod. Opt. 47, 765–768 (2000).

M. Xiao, “On near-field scanning optical microscopy: homogeneous and evanescent radiation,” J. Mod. Opt. 44, 327–344 (1997).
[CrossRef]

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

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

Phys. Rev. E (1)

T. Setälä, A. T. Friberg, M. Kaivola, “Decomposition of the point-dipole field into homogeneous and evanescent parts,” Phys. Rev. E 59, 1200–1206 (1999).
[CrossRef]

Surf. Sci. (1)

O. Keller, M. Xiao, S. Bozhevolnyi, “Configura-tional resonances in optical near-field microscopy: a rigorous point-dipole approach,” Surf. Sci. 280, 217–230 (1993).
[CrossRef]

Other (1)

See Ref. 1, Refs. 9–15.

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