期刊
EUROPHYSICS LETTERS
卷 57, 期 2, 页码 191-197出版社
EDP SCIENCES S A
DOI: 10.1209/epl/i2002-00560-3
关键词
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We report the observation, in the range of visible frequencies, of the coupling of light into integrated waveguides of subwavelength cross-sections together with a subwavelength detection at the output, of such guides. Coupling in is produced by controlling the focusing of a laser beam totally reflected at the surface of the sample. Several tens of micrometres long dielectric ridges have been efficiently excited with this technique. The phenomenon is observed in direct space by a Photon Scanning Tunneling Microscope which also allows to test the principle of detection in a subwavelength volume.
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