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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 7, Iss. 6 — May. 25, 2012

Effects of spherical mode coupling on near-field focusing by clusters of dielectric microspheres

Alexander Pikulin, Andrei Afanasiev, Nadezhda Agareva, Alexander P. Alexandrov, Vladimir Bredikhin, and Nikita Bityurin  »View Author Affiliations

Optics Express, Vol. 20, Issue 8, pp. 9052-9057 (2012)

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Colloidal particle lens array (CPLA) proved to be an efficient near-field focusing device for laser nanoprocessing of materials. Within CPLA, spherical particles do not act as independent microlenses. Due to the coupling of the spherical modes, the field near the clusters of spherical microparticles cannot be calculated by means of the superposition of Mie solutions for individual spheres. In the paper, the electromagnetic field distributions near laser-irradiated clusters of dielectric microspheres with configurations that match the fragments of the close-packed CPLA are studied. It is shown that some practically important mode coupling effects can be understood in terms of an effective immersion medium formed for the spherical particle by its surrounding.

© 2012 OSA

OCIS Codes
(290.4020) Scattering : Mie theory
(350.3390) Other areas of optics : Laser materials processing
(350.4238) Other areas of optics : Nanophotonics and photonic crystals

ToC Category:

Original Manuscript: February 15, 2012
Revised Manuscript: March 30, 2012
Manuscript Accepted: March 30, 2012
Published: April 3, 2012

Virtual Issues
Vol. 7, Iss. 6 Virtual Journal for Biomedical Optics

Alexander Pikulin, Andrei Afanasiev, Nadezhda Agareva, Alexander P. Alexandrov, Vladimir Bredikhin, and Nikita Bityurin, "Effects of spherical mode coupling on near-field focusing by clusters of dielectric microspheres," Opt. Express 20, 9052-9057 (2012)

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