Multiplasmons-Pumped Excited-State Absorption and Energy Transfer Upconversion of Rare-Earth-Doped Luminescence beyond the Diffraction Limit

• DOI: 10.1021/acsphotonics.0c01747
• Publication Date: 2021-03-04T20:02:05Z
• Authors: Huan Chen; Meijuan Sun; Jie Ma; Baobao Zhang; Chi Wang; Lei Guo; Tao Ding; Zhenglong Zhang; Hairong Zheng; Hongxing Xu
• Keywords: Photon Upconversion; Photoluminescence excitation

Rare-earth-doped upconversion luminescence has attracted extensive attention due to its narrow-band and wide-range emission spectra, which cover biological optical communication windows. For direct laser excitation, the photoluminescence of nanoparticles is inevitably involved in excitation signals luminescence, limiting application high background noise, heating, low quantum yield rare-earth-doped photoluminescence. Here, multiplasmons-excited was investigated by employing propagating surface plasmons polaritons on a monocrystalline silver microplate: pure plasmon near-field without Due multisurface exhibit strong excited-state absorption energy transfer upconversion, more than 97-fold enhancement obtained noise. It found that can be easily controlled propagation modes polarization directions, super-resolution achieved beyond diffraction limit. The characterization multiplasmon-excited helps not only enhance understanding light–matter interactions between rare-earth ions near-field, but also benefits development bioimaging micro light sources.