Kinetic limits for sensing tip morphology in near-field scanning optical microscopes

The lateral spatial resolution provided by near-field scanning optical microscopes depends critically on the shape and size of the sharpened tip of the optical fiber used as a source of light or sensing element. The fabrication of a tip by the commonly used heating and pulling method is examined. It...

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Bibliographic Details
Published in:Journal of applied physics 1993-06, Vol.73 (11), p.7984-7986
Main Authors: YAKOBSON, B. I, MOYER, P. J, PAESLER, M. A
Format: Article
Language:English
Subjects:
Conventional optical microscopes
Exact sciences and technology
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Optical instruments, equipment and techniques
Physics
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Summary:The lateral spatial resolution provided by near-field scanning optical microscopes depends critically on the shape and size of the sharpened tip of the optical fiber used as a source of light or sensing element. The fabrication of a tip by the commonly used heating and pulling method is examined. It consists of an initially pulling and rupture followed by a cooling and relaxation. The presented analysis leads to a deeper physical understanding of these processes and suggests avenues for technical improvements.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.353911