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Title: Optical near-field probe with embedded gallium scattering center
Authors: Isakov, D.V.
Zhang, Y.
Balk, L.J.
Phang, J.C.H. 
Issue Date: 2009
Citation: Isakov, D.V., Zhang, Y., Balk, L.J., Phang, J.C.H. (2009). Optical near-field probe with embedded gallium scattering center. Applied Physics Letters 94 (25) : -. ScholarBank@NUS Repository.
Abstract: An optical near-field probe is proposed in which gallium is embedded into the tip of a tapered optical glass fiber to form a scattering center. Gallium is embedded by implantation during the process of probe sharpening by a raster-scanned focused ion beam. Using quasielectrostatic approximation, it is predicted that the presence of gallium should improve the scattering efficiency by an order of magnitude in comparison with a probe without gallium implantation. Imaging of a polished waveguide with different probes shows that Ga implantation can improve the efficiency by 37 times. © 2009 American Institute of Physics.
Source Title: Applied Physics Letters
ISSN: 00036951
DOI: 10.1063/1.3157909
Appears in Collections:Staff Publications

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