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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editor: Gregory W. Faris
  • Vol. 1, Iss. 5 — May. 5, 2006

Development of high-throughput, polarization-maintaining, near-field probes

Vivekananda P. Adiga, Paul W. Kolb, Geoffrey T. Evans, Max A. Cubillos-Moraga, Don C. Schmadel, Richard Dyott, and H. Dennis Drew  »View Author Affiliations

Applied Optics, Vol. 45, Issue 12, pp. 2597-2600 (2006)

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A novel, chemical-etching technique produces very high throughput, polarization-maintaining probes for near-field, scanning, optical microscopy (NSOM). The process includes coating the tips with aluminum and forming the apertures with a focused ion beam (FIB). The elliptical core fibers used resulted in elliptical apertures for the probes. The throughput of the probes depends on the incident polarization. For polarization parallel to the minor axis, the tip presents an insertion loss of only 20   dB for aperture widths of 55   nm . Probes have a typical polarization extinction of 100 to 1 in the far field. These tips produced NSOM images of gold dots on a GaAs substrate in reflection mode.

© 2006 Optical Society of America

OCIS Codes
(110.1220) Imaging systems : Apertures
(180.5810) Microscopy : Scanning microscopy
(230.4000) Optical devices : Microstructure fabrication

Original Manuscript: July 18, 2005
Revised Manuscript: November 11, 2005
Manuscript Accepted: November 16, 2005

Virtual Issues
Vol. 1, Iss. 5 Virtual Journal for Biomedical Optics

Vivekananda P. Adiga, Paul W. Kolb, Geoffrey T. Evans, Max A. Cubillos-Moraga, Don C. Schmadel, Richard Dyott, and H. Dennis Drew, "Development of high-throughput, polarization-maintaining, near-field probes," Appl. Opt. 45, 2597-2600 (2006)

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