Detecting the trapping of small metal nanoparticles in the gap of nanoantennas with optical second harmonic generation

The second harmonic generation from gold nanoparticles trapped into realistic and idealized gold nanoantennas is numerically investigated using a surface integral equations technique. It is observed that the presence of a nanoparticle in the nanoantenna gap dramatically modifies the second harmonic intensity scattered into the far-field. These results clearly demonstrate that second harmonic generation is a promising alternative to the conventional linear optical methods for the detection of trapping events at the nanoscale.


Published in:
Optics Express, 21, 23, 28710-28718
Year:
2013
Publisher:
Optical Society of America
ISSN:
1094-4087
Keywords:
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 Record created 2014-05-05, last modified 2018-03-19

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