2019
DOI: 10.1021/acsphotonics.9b00285
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Cascaded Plasmon-Enhanced Emission from a Single Upconverting Nanocrystal

Abstract: Plasmonics has been used to enhance light− matter interaction at the extreme subwavelength scale. Intriguingly, it is possible to achieve multiple plasmonic resonances from a single nanostructure, and these can be used in combination to provide cascaded enhanced interactions. Here, we demonstrate three distinct plasmon resonances for enhanced upconversion emission from a single upconverting nanocrystal trapped in a metal nanoaperture optical tweezer. For apertures where the plasmonic resonances occur at the em… Show more

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Cited by 26 publications
(26 citation statements)
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“…In a previous work that allowed us to make this step forward, we reported on the rectangular aperture optical tweezer to enhance the upconversion emission of Yb–Er-doped NaYF 4 upconversion nanocrystals (UCNCs) . In the aperture, the plasmonic enhancement was about 400×, and the nanocrystals each contained approximately 2000 erbium ions.…”
mentioning
confidence: 99%
“…In a previous work that allowed us to make this step forward, we reported on the rectangular aperture optical tweezer to enhance the upconversion emission of Yb–Er-doped NaYF 4 upconversion nanocrystals (UCNCs) . In the aperture, the plasmonic enhancement was about 400×, and the nanocrystals each contained approximately 2000 erbium ions.…”
mentioning
confidence: 99%
“…A finite difference time domain (FDTD) method was employed for the simulation of SPR phenomenon in the Kretschmann configuration using a commercial package of Lumerical [18,19]. The FDTD method is highly reliable and advantageous over other techniques in solving Maxwell's equations for complex geometries of materials.…”
Section: Simulation Setupmentioning
confidence: 99%
“…[ 43 ] Even a single aperture can have multiple resonances while retaining a subwavelength scale. [ 44 ] For upconversion enhancement, this resulted in 400 times enhancement by enhancements in both the incident and the emitted field.…”
Section: Theorymentioning
confidence: 99%
“…Optical trapping has been demonstrated to enhance the optical signal of nanocrystals containing Erbium ions by enhancing both the upconversion excitation scheme and the emission rate. [ 44 ] The enhancement was sufficient to allow for resolving quantization in the number of emitters and thereby provides a path toward the deterministic isolation of single emitters, [ 116 ] as shown in Figure 6c. Of particular note, Erbium emitters have photon emission at the lowest loss wavelength fiber optic window and are therefore of interest to transmission of single photons over optical fibers.…”
Section: Applicationsmentioning
confidence: 99%