Study of Nonlinear Plasmonic Scattering in Metallic Nanoparticles

Yu Ting Chen, Po Hsuan Lee, Po Ting Shen, Jann Launer, Ryosuke Oketani, Kuan Yu Li, Yen Ta Huang, Kyoko Masui, Satoru Shoji, Katsumasa Fujita, Shi Wei Chu

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

Nonlinear optical effects play key roles to communication, sensing, imaging, and so on. Recently, nonlinear scattering (saturation and reverse saturation) was discovered in gold nanospheres, providing a novel approach to nonbleaching super-resolution microscopy. However, the nonlinearity was previously limited to green-orange plasmonic band. It is highly desirable to extend the applicable wavelength range. In this work, we demonstrated nonlinear scattering in near-infrared with gold nanorods and in blue-violet with silver nanospheres. Besides, the nonlinear mechanism is clarified via different material/geometry. By spectrally decoupling the contributions of plasmonic absorption/scattering and interband/intraband transitions, we have verified plasmonic absorption, and the subsequent thermal effects to be the dominating source of nonlinearity. Our work not only provides the physical mechanism of the nonlinear scattering, but also paves the way toward multicolor super-resolution imaging based on plasmonic scattering.

Original languageEnglish
Pages (from-to)1432-1439
Number of pages8
JournalACS Photonics
Volume3
Issue number8
DOIs
Publication statusPublished - Aug 17 2016
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biotechnology
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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