Chiral coupling in gold nanodimers
Husu, H.; Canfield, B.K.; Laukkanen, J.; Bai, B.; Kuittinen, M.; Turunen, J.; Kauranen, M. (2008)
Husu, H.
Canfield, B.K.
Laukkanen, J.
Bai, B.
Kuittinen, M.
Turunen, J.
Kauranen, M.
2008
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tty-201103311166
https://urn.fi/URN:NBN:fi:tty-201103311166
Kuvaus
Peer reviewed
Tiivistelmä
Second-harmonic generation from T-shaped gold nanodimers with nanogaps has different efficiencies for left- and right-hand circularly polarized fundamental light. The difference arises from the chiral symmetry breaking of the dimers due to nonorthogonal mutual orientations of the horizontal and vertical bars of the T shape and depends on the gap size. Unexpectedly, the smallest gap with presumably the strongest coupling gives rise to only a small difference. All results can be explained by considering the distribution of the polarized local field in the structure.
Kokoelmat
- TUNICRIS-julkaisut [16740]