Measurement of a saturated emission of optical radiation from gold nanoparticles: Application to an ultrahigh resolution microscope

Shi Wei Chu, Tung Yu Su, Ryosuke Oketani, Yen Ta Huang, Hsueh Yu Wu, Yasuo Yonemaru, Masahito Yamanaka, Hsuan Lee, Guan Yu Zhuo, Ming Ying Lee, Satoshi Kawata, Katsumasa Fujita

Research output: Contribution to journalArticlepeer-review

71 Citations (Scopus)

Abstract

We show that scattering from a single gold nanoparticle is saturable for the first time. Wavelength-dependent study reveals that the saturation behavior is governed by depletion of surface plasmon resonance, not the thermal effect. We observed interesting flattening of the point spread function of scattering from a single nanoparticle due to saturation. By extracting the saturated part of scattering via temporal modulation, we achieve λ/8 point spread function in far-field imaging with unambiguous separation of adjacent particles.

Original languageEnglish
Article number017402
JournalPhysical review letters
Volume112
Issue number1
DOIs
Publication statusPublished - Jan 7 2014
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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