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Far field characterization of diffracting circular apertures
The far field angular intensity distribution I(θ) of the λ=633 nm radiation transmitted through diffracting circular apertures is measured for diameters ranging between 60 and 500 nm. The circular apertures are located at the apex of aluminum coated tapered optical fiber tips. I(θ) depends sensitive...
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Published in: | Applied physics letters 1995-12, Vol.67 (23), p.3408-3410 |
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Main Authors: | , |
Format: | Article |
Language: | English |
Citations: | Items that cite this one |
Online Access: | Get full text |
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Summary: | The far field angular intensity distribution I(θ) of the λ=633 nm radiation transmitted through diffracting circular apertures is measured for diameters ranging between 60 and 500 nm. The circular apertures are located at the apex of aluminum coated tapered optical fiber tips. I(θ) depends sensitively on the aperture diameters down to λ/6. This property is used to determine the optical aperture size of metal coated tapered optical fiber tips used for near field scanning optical microscopy. |
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ISSN: | 0003-6951 1077-3118 |
DOI: | 10.1063/1.115262 |