Hybrid Photonic-Plasmonic Cavity Design for Very Large Purcell Factors at Telecommunication Wavelengths
Physical Review Applied, ISSN: 2331-7019, Vol: 18, Issue: 4
2022
- 17Citations
- 15Captures
- 1Mentions
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New Nanoparticles Findings from Friedrich-Schiller-University Jena Discussed (Hybrid Photonic-plasmonic Cavity Design for Very Large Purcell Factors At Telecommunication Wavelengths)
2022 DEC 09 (NewsRx) -- By a News Reporter-Staff News Editor at Telecommunications Daily -- Data detailed on Nanotechnology - Nanoparticles have been presented. According
Article Description
Hybrid photonic-plasmonic cavities can be tailored to display high Q factors and extremely small mode volumes simultaneously, which ultimately results in large values of the Purcell factor, FP. Amongst the different hybrid configurations, those based on a nanoparticle-on-a-mirror plasmonic cavity provide one of the lowest mode volumes, though so far their operation has been constrained to wavelengths below 1μm. Here, we propose a hybrid configuration consisting of a silicon photonic crystal cavity with a slot at its center in which a gold nanoparticle is introduced. This hybrid system operates at telecom wavelengths and provides high Q-factor values (Q≈105) and small normalized mode volumes (Vm≈10-4), leading to extremely large Purcell-factor values, FP≈107-108. The proposed cavity could be used in different applications such as molecular optomechanics, bio- and chemosensing, efficient quantum emitters, or enhanced Raman spectroscopy in the relevant telecom-wavelength regime.
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