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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 2, Iss. 9 — Sep. 26, 2007

Corrugated metal-coated tapered tip for scanning near-field optical microscope

Tomasz J. Antosiewicz and Tomasz Szoplik  »View Author Affiliations


Optics Express, Vol. 15, Issue 17, pp. 10920-10928 (2007)
http://dx.doi.org/10.1364/OE.15.010920


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Abstract

This paper addresses an important issue of light throughput of a metal-coated tapered tip for scanning near-field microscope (SNOM). Corrugations of the interface between the fiber core and metal coating in the form of parallel grooves of different profiles etched in the core considerably increase the energy throughput. In 2D FDTD simulations in the Cartesian coordinates we calculate near-field light emitted from such tips. For a certain wavelength range total intensity of forward emission from the corrugated tip is 10 times stronger than that from a classical tapered tip. When realized in practice the idea of corrugated tip may lead up to twice better resolution of SNOM.

© 2007 Optical Society of America

OCIS Codes
(180.0180) Microscopy : Microscopy
(180.5810) Microscopy : Scanning microscopy
(240.5420) Optics at surfaces : Polaritons
(240.6680) Optics at surfaces : Surface plasmons
(240.6690) Optics at surfaces : Surface waves
(350.4600) Other areas of optics : Optical engineering

ToC Category:
Microscopy

History
Original Manuscript: June 13, 2007
Revised Manuscript: July 24, 2007
Manuscript Accepted: July 30, 2007
Published: August 15, 2007

Virtual Issues
Vol. 2, Iss. 9 Virtual Journal for Biomedical Optics

Citation
Tomasz J. Antosiewicz and Tomasz Szoplik, "Corrugated metal–coated tapered tip for scanning near–field optical microscope," Opt. Express 15, 10920-10928 (2007)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=oe-15-17-10920


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