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Optics Letters

Optics Letters


  • Vol. 32, Iss. 5 — Mar. 1, 2007
  • pp: 509–511

High-resolution surface-plasmon imaging in air and in water: V ( z ) curve and operating conditions

Lotfi Berguiga, Sanjun Zhang, Françoise Argoul, and Juan Elezgaray  »View Author Affiliations

Optics Letters, Vol. 32, Issue 5, pp. 509-511 (2007)

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We present what are believed to be the first images obtained with a far-field high-resolution scanning surface-plasmon microscope in an aqueous medium. Measurements of V ( z ) , the output response of the microscope, versus defocus z give a signature of the surface-plasmon propagation. V ( z ) is strongly conditioned by the laser beam diameter and the objective’s numerical aperture, and we show how the operating mode (in air and in water) must be chosen to maximize the surface-plasmon field and to minimize diffraction (edge) effects.

© 2007 Optical Society of America

OCIS Codes
(180.3170) Microscopy : Interference microscopy
(180.5810) Microscopy : Scanning microscopy
(240.6680) Optics at surfaces : Surface plasmons

ToC Category:

Original Manuscript: October 25, 2006
Manuscript Accepted: November 14, 2006
Published: February 2, 2007

Virtual Issues
Vol. 2, Iss. 4 Virtual Journal for Biomedical Optics

Lotfi Berguiga, Sanjun Zhang, Françoise Argoul, and Juan Elezgaray, "High-resolution surface-plasmon imaging in air and in water: V(z) curve and operating conditions," Opt. Lett. 32, 509-511 (2007)

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