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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 31, Iss. 18 — Jun. 20, 1992
  • pp: 3518–3523

Energy-density distribution inside large nonabsorbing spheres by using Mie theory and geometrical optics

Dipakbin Q. Chowdhury, Peter W. Barber, and Steven C. Hill  »View Author Affiliations


Applied Optics, Vol. 31, Issue 18, pp. 3518-3523 (1992)
http://dx.doi.org/10.1364/AO.31.003518


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Abstract

Mie theory and geometrical-optics ray tracing are used to obtain the distribution of electric energy density inside a nonabsorbing micrometer-sized sphere illuminated by a polarized plane wave. The Mie solution shows the multiply reflected geometrical-optics rays inside a sphere having a diameter of ~ 150 free-space wavelengths (size parameter = circumference/wavelength = 500). The geometrical-optics result shows the major features of the Mie solution and provides a physical interpretation of the electromagnetic interactions that result in the observed energy-density distributions. Both solutions show internal on-axis energy-density maxima inside the shadow surface of the sphere. The region of greatest enhanced energy density is approximately one internal wavelength in diameter and approximately twenty internal wavelengths in length.

© 1992 Optical Society of America

History
Original Manuscript: March 25, 1991
Published: June 20, 1992

Citation
Dipakbin Q. Chowdhury, Peter W. Barber, and Steven C. Hill, "Energy-density distribution inside large nonabsorbing spheres by using Mie theory and geometrical optics," Appl. Opt. 31, 3518-3523 (1992)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-31-18-3518

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