{"paper":{"title":"Generation and subwavelength focusing of longitudinal magnetic fields in a metallized fiber tip","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Arian Kriesch, Daniel Ploss, Hannes Pfeifer, Peter Banzer, Ulf Peschel","submitted_at":"2014-01-31T09:40:57Z","abstract_excerpt":"We demonstrate experimentally and numerically that in fiber tips as they are used in NSOMs azimuthally polarized electrical fields (|E$_{\\text{azi}}$|$^2$/|E$_{\\text{tot}}$|$^2$ $\\approx$ 55% $\\pm $ 5% for 1.4\\mu m tip aperture diameter and \\lambda$_0$ = 1550nm), respectively subwavelength confined (FWHM $\\approx$ 450nm $\\approx$ \\lambda$_0$/3.5) magnetic fields, are generated for a certain tip aperture diameter (d = 1.4\\mu m). 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 trunca"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.8099","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}