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2016 ; 7
(ä): 10685
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Frequency comb transferred by surface plasmon resonance
#MMPMID26898307
Geng XT
; Chun BJ
; Seo JH
; Seo K
; Yoon H
; Kim DE
; Kim YJ
; Kim S
Nat Commun
2016[Feb]; 7
(ä): 10685
PMID26898307
show ga
Frequency combs, millions of narrow-linewidth optical modes referenced to an
atomic clock, have shown remarkable potential in time/frequency metrology,
atomic/molecular spectroscopy and precision LIDARs. Applications have extended to
coherent nonlinear Raman spectroscopy of molecules and quantum metrology for
entangled atomic qubits. Frequency combs will create novel possibilities in
nano-photonics and plasmonics; however, its interrelation with surface plasmons
is unexplored despite the important role that plasmonics plays in nonlinear
spectroscopy and quantum optics through the manipulation of light on a
subwavelength scale. Here, we demonstrate that a frequency comb can be
transformed to a plasmonic comb in plasmonic nanostructures and reverted to the
original frequency comb without noticeable degradation of <6.51 × 10(-19) in
absolute position, 2.92 × 10(-19) in stability and 1?Hz in linewidth. The results
indicate that the superior performance of a well-defined frequency comb can be
applied to nanoplasmonic spectroscopy, quantum metrology and subwavelength
photonic circuits.