Near-Field Optics with Uncoated Fiber Tips

Light Confinement and Spatial Resolution

Sergei I. Bozhevolnyi, Brian Vohnsen

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

Using a macroscopic self-consistent model for scanning near-field optical microscopy, we show that the field distribution of light emitted by an uncoated fiber tip near a sample surface consists of two spatially separated domains, of which only the central domain (near the tip end) contains evanescent-field components. The relative magnitude of the near-field contribution is found to be strongly dependent on the tip shape. Spatial resolution in near-field microscopy and lithography with uncoated fiber tips is discussed on the basis of the numerical results. Experimental results obtained on surface modification of polymer films, phase conjugation of optical near fields, and surface-polariton localization are presented. Using optical images with true optical contrast (i.e., not correlated to surface topography), we find the spatial resolution to be ∼100 nm for the light wavelength of 633 nm.
OriginalsprogEngelsk
TidsskriftJournal of the Optical Society of America B: Optical Physics
Vol/bind14
Udgave nummer7
Sider (fra-til)1656-1663
ISSN0740-3224
DOI
StatusUdgivet - 1997
Udgivet eksterntJa

Fingeraftryk

near fields
spatial resolution
optics
fibers
microscopy
phase conjugation
polaritons
topography
lithography
scanning
polymers
wavelengths

Citer dette

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abstract = "Using a macroscopic self-consistent model for scanning near-field optical microscopy, we show that the field distribution of light emitted by an uncoated fiber tip near a sample surface consists of two spatially separated domains, of which only the central domain (near the tip end) contains evanescent-field components. The relative magnitude of the near-field contribution is found to be strongly dependent on the tip shape. Spatial resolution in near-field microscopy and lithography with uncoated fiber tips is discussed on the basis of the numerical results. Experimental results obtained on surface modification of polymer films, phase conjugation of optical near fields, and surface-polariton localization are presented. Using optical images with true optical contrast (i.e., not correlated to surface topography), we find the spatial resolution to be ∼100 nm for the light wavelength of 633 nm.",
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Near-Field Optics with Uncoated Fiber Tips : Light Confinement and Spatial Resolution. / Bozhevolnyi, Sergei I.; Vohnsen, Brian.

I: Journal of the Optical Society of America B: Optical Physics, Bind 14, Nr. 7, 1997, s. 1656-1663.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Near-Field Optics with Uncoated Fiber Tips

T2 - Light Confinement and Spatial Resolution

AU - Bozhevolnyi, Sergei I.

AU - Vohnsen, Brian

PY - 1997

Y1 - 1997

N2 - Using a macroscopic self-consistent model for scanning near-field optical microscopy, we show that the field distribution of light emitted by an uncoated fiber tip near a sample surface consists of two spatially separated domains, of which only the central domain (near the tip end) contains evanescent-field components. The relative magnitude of the near-field contribution is found to be strongly dependent on the tip shape. Spatial resolution in near-field microscopy and lithography with uncoated fiber tips is discussed on the basis of the numerical results. Experimental results obtained on surface modification of polymer films, phase conjugation of optical near fields, and surface-polariton localization are presented. Using optical images with true optical contrast (i.e., not correlated to surface topography), we find the spatial resolution to be ∼100 nm for the light wavelength of 633 nm.

AB - Using a macroscopic self-consistent model for scanning near-field optical microscopy, we show that the field distribution of light emitted by an uncoated fiber tip near a sample surface consists of two spatially separated domains, of which only the central domain (near the tip end) contains evanescent-field components. The relative magnitude of the near-field contribution is found to be strongly dependent on the tip shape. Spatial resolution in near-field microscopy and lithography with uncoated fiber tips is discussed on the basis of the numerical results. Experimental results obtained on surface modification of polymer films, phase conjugation of optical near fields, and surface-polariton localization are presented. Using optical images with true optical contrast (i.e., not correlated to surface topography), we find the spatial resolution to be ∼100 nm for the light wavelength of 633 nm.

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DO - 10.1364/JOSAB.14.001656

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