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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 6 — Mar. 14, 2011
  • pp: 5077–5085

Ultra-high resolution resonant C-shaped aperture nano-tip

Yao-Te Cheng, Yuzuru Takashima, Yin Yuen, Paul C. Hansen, J. Brian Leen, and Lambertus Hesselink  »View Author Affiliations


Optics Express, Vol. 19, Issue 6, pp. 5077-5085 (2011)
http://dx.doi.org/10.1364/OE.19.005077


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Abstract

We report a new optical near-field transducer comprised of a metallic nano-antenna extending from the ridge of a C-shaped metallic nano-aperture. Finite-difference time domain simulations predict that the C-aperture nano-tip (CAN-Tip) provides high intensity (650x), high optical resolution (~λ/60), and background-free near-field illumination at a wavelength of 980 nm. The CAN-Tip has an aperture resonance and tip antenna resonance which may be tuned independently, so the structure can be made resonant at ultraviolet wavelengths without being unduly small. This near-field optical resolution of 16.1 nm has been experimentally confirmed by employing the CAN-Tip as an NSOM probe.

© 2011 OSA

OCIS Codes
(050.1220) Diffraction and gratings : Apertures
(350.4238) Other areas of optics : Nanophotonics and photonic crystals
(180.4243) Microscopy : Near-field microscopy
(050.6624) Diffraction and gratings : Subwavelength structures

ToC Category:
Microscopy

History
Original Manuscript: January 6, 2011
Revised Manuscript: February 19, 2011
Manuscript Accepted: February 21, 2011
Published: March 2, 2011

Citation
Yao-Te Cheng, Yuzuru Takashima, Yin Yuen, Paul C. Hansen, J. Brian Leen, and Lambertus Hesselink, "Ultra-high resolution resonant C-shaped aperture nano-tip," Opt. Express 19, 5077-5085 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-6-5077


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References

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