Optical antenna: Towards a unity efficiency near-field optical probe
作者:
Robert D. Grober,
Robert J. Schoelkopf,
Daniel E. Prober,
期刊:
Applied Physics Letters
(AIP Available online 1997)
卷期:
Volume 70,
issue 11
页码: 1354-1356
ISSN:0003-6951
年代: 1997
DOI:10.1063/1.118577
出版商: AIP
数据来源: AIP
摘要:
We demonstrate that an antenna can be used to realize a near-field optical probe that combines spatial resolution well below the diffraction limit with transmission efficiency approaching unity. The probe consists 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. ©1997 American Institute of Physics.
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