Generation and subwavelength focusing of longitudinal magnetic fields in a metallized fiber tip

Ploss D, Kriesch A, Pfeifer H, Banzer P, Peschel U (2014)

Publication Type: Journal article

Publication year: 2014

Journal

Optics Express Optical Society of America

Book Volume: 22

Pages Range: 13744-13754

Journal Issue: 11

DOI: 10.1364/OE.22.013744

Abstract

We demonstrate experimentally and numerically that in fiber tips as they are used in NSOMs azimuthally polarized electrical fields (|Eazi|2 / |Etot|2 $≈$55% $±$ 5% for \textgreekl0= 1550 nm), respectively subwavelength confined (FWHM $≈$450 nm $≈$\textgreekl0/3.5) magnetic fields, are generated for a certain tip aperture diameter (d = 1.4 \textgreekmm). We attribute the generation of this field distribution in metal-coated fiber tips to symmetry breaking in the bend and subsequent plasmonic mode filtering in the truncated conical taper.

Authors with CRIS profile

Daniel Ploss Institut für Optik, Information und Photonik Arian Kriesch Professur für Experimentalphysik Hannes Pfeifer Lehrstuhl für Experimentalphysik (Optik) Peter Banzer Lehrstuhl für Experimentalphysik (Optik) Ulf Peschel Professur für Experimentalphysik

Additional Organisation(s)

Exzellenz-Cluster Engineering of Advanced Materials

How to cite

APA:

Ploss, D., Kriesch, A., Pfeifer, H., Banzer, P., & Peschel, U. (2014). Generation and subwavelength focusing of longitudinal magnetic fields in a metallized fiber tip. Optics Express, 22(11), 13744-13754. https://dx.doi.org/10.1364/OE.22.013744

MLA:

Ploss, Daniel, et al. "Generation and subwavelength focusing of longitudinal magnetic fields in a metallized fiber tip." Optics Express 22.11 (2014): 13744-13754.

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