抄録
As a platform for active nanophotonics, localized surface plasmon resonance (LSPR) switching via interaction with a chalcogenide phase change material (GeSbTe) was investigated. We performed single-particle spectroscopy of gold nanoparticles placed on a GeSbTe thin film. By irradiation with a femtosecond pulsed laser for amorphization and a continuous wave laser for crystallization, significant switching behavior of the LSPR band due to the interaction of GeSbTe was observed. The switching mechanism was explained in terms of both a change in the refractive index and a modification of surface morphology accompanying volume expansion and reduction of GeSbTe.
本文言語 | English |
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論文番号 | 241101 |
ジャーナル | Applied Physics Letters |
巻 | 103 |
号 | 24 |
DOI | |
出版ステータス | Published - 2013 12月 9 |
ASJC Scopus subject areas
- 物理学および天文学(その他)