OPTICAL ANTENNA - TOWARDS A UNITY EFFICIENCY NEAR-FIELD OPTICAL PROBE

Citation
Rd. Grober et al., OPTICAL ANTENNA - TOWARDS A UNITY EFFICIENCY NEAR-FIELD OPTICAL PROBE, Applied physics letters, 70(11), 1997, pp. 1354-1356
Citations number
11
Categorie Soggetti
Physics, Applied
Journal title
ISSN journal
00036951
Volume
70
Issue
11
Year of publication
1997
Pages
1354 - 1356
Database
ISI
SICI code
0003-6951(1997)70:11<1354:OA-TAU>2.0.ZU;2-X
Abstract
We demonstrate that an antenna can be used to realize a near-field opt ical probe that combines spatial resolution well below the diffraction limit with transmission efficiency approaching unity. The probe consi sts of a planar bow-tie antenna with an open-circuited gap at its apex . We present proof-of-principle measurements using microwave radiation and discuss scaling the antenna to the visible optical spectrum. (C) 1997 American Institute of Physics.