k-space imaging of the eigenmodes of sharp gold tapers for scanning near-field optical microscopy
We investigate the radiation patterns of sharp conical gold tapers, which were designed as adiabatic nanofocusing probes for scanning near-field optical microscopy (SNOM). Field calculations show that only the lowest order eigenmode of such a taper can reach the very apex and thus induce the generat...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Beilstein-Institut
2013-10-01
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| Series: | Beilstein Journal of Nanotechnology |
| Subjects: | |
| Online Access: | https://doi.org/10.3762/bjnano.4.67 |