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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 5 — Mar. 11, 2013
  • pp: 5625–5633

Optical magnetic field mapping using a subwavelength aperture

Hyun Woo Kihm, Jineun Kim, Sukmo Koo, Jaesung Ahn, Kwangjun Ahn, Kwanggeol Lee, Namkyoo Park, and Dai-Sik Kim  »View Author Affiliations

Optics Express, Vol. 21, Issue 5, pp. 5625-5633 (2013)

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Local distribution of the optical magnetic field is a critical parameter in developing materials with artificially engineered optical properties. Optical magnetic field characterization in nano-scale remains a challenge, because of the weak matter-optical magnetic field interactions. Here, we demonstrate an experimental visualization of the optical magnetic field profiles by raster scanning circular apertures in metal film or in a conical probe. Optical magnetic fields of surface plasmon polaritons and radially polarized beam are visualized by measuring the transmission through metallic apertures, in excellent agreements with theoretical predictions. Our results show that Bethe-Bouwkamp aperture can be used in visualizing optical magnetic field profiles.

© 2013 OSA

OCIS Codes
(260.2110) Physical optics : Electromagnetic optics
(310.6628) Thin films : Subwavelength structures, nanostructures

ToC Category:
Physical Optics

Original Manuscript: December 10, 2012
Revised Manuscript: January 16, 2013
Manuscript Accepted: January 23, 2013
Published: February 28, 2013

Virtual Issues
March 8, 2013 Spotlight on Optics

Hyun Woo Kihm, Jineun Kim, Sukmo Koo, Jaesung Ahn, Kwangjun Ahn, Kwanggeol Lee, Namkyoo Park, and Dai-Sik Kim, "Optical magnetic field mapping using a subwavelength aperture," Opt. Express 21, 5625-5633 (2013)

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