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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Stephen A. Burns
  • Vol. 25, Iss. 8 — Aug. 1, 2008
  • pp: 2102–2113

Robust determination of the anisotropic polarizability of nanoparticles using coherent confocal microscopy

Brynmor J. Davis and P. Scott Carney  »View Author Affiliations


JOSA A, Vol. 25, Issue 8, pp. 2102-2113 (2008)
http://dx.doi.org/10.1364/JOSAA.25.002102


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Abstract

A coherent confocal microscope is proposed as a means to fully characterize the elastic scattering properties of a nanoparticle as a function of wavelength. Using a high numerical aperture lens, two-dimensional scanning, and a simple vector-beam shaper, the rank-2 polarizability tensor is estimated from a single confocal image. A method for computationally efficient data processing is described, and numerical simulations show that this algorithm is robust to noise and uncertainty in the focal plane position. The proposed method is a generalization of techniques that provide an estimate of a limited set of scattering parameters, such as a single orientation angle for rodlike particles. The measurement of the polarizability obviates the need for a priori assumptions about the nanoparticle.

© 2008 Optical Society of America

OCIS Codes
(120.5410) Instrumentation, measurement, and metrology : Polarimetry
(180.3170) Microscopy : Interference microscopy
(290.0290) Scattering : Scattering
(110.1758) Imaging systems : Computational imaging
(100.3200) Image processing : Inverse scattering

ToC Category:
Scattering

History
Original Manuscript: April 9, 2008
Manuscript Accepted: June 8, 2008
Published: July 24, 2008

Virtual Issues
Vol. 3, Iss. 9 Virtual Journal for Biomedical Optics

Citation
Brynmor J. Davis and P. Scott Carney, "Robust determination of the anisotropic polarizability of nanoparticles using coherent confocal microscopy," J. Opt. Soc. Am. A 25, 2102-2113 (2008)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-25-8-2102

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