PMID- 30602924
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20201001
IS  - 1364-5021 (Print)
IS  - 1471-2946 (Electronic)
IS  - 1364-5021 (Linking)
VI  - 474
IP  - 2220
DP  - 2018 Dec
TI  - Properties of spoof plasmon in thin structures.
PG  - 20180205
LID - 10.1098/rspa.2018.0205 [doi]
LID - 20180205
AB  - Spoof surface plasmon polariton (SSPP) is an exotic electromagnetic state that 
      confines light at a subwavelength scale at a design-specific frequency. It has 
      been known for a while that spoof plasmon mode can exist in planar, thin 
      structures with dispersion properties similar to that of its wide 
      three-dimensional structure counterpart. We, however, have shown that spoof 
      plasmons in thin structures possess some unique properties that remain 
      unexplored. Our analysis reveals that the field interior to SSPP waveguide can 
      achieve an exceptional hyperbolic spatial dependence, which can explain why spoof 
      plasma resonance incurs red-shift with the reduction of the waveguide thickness, 
      whereas common wisdom suggests frequency blue-shift of a resonant structure with 
      its size reduction. In addition, we show that strong confinement can be achieved 
      over a wide band in thin spoof plasmon structure, ranging from the spoof plasma 
      frequency up to a lower frequency considerably away from the resonant point. The 
      nature of lateral confinement in thin SSPP structures may enable interesting 
      applications involving fast modulation rate due to enhanced sensitivity of 
      optical modes without compromising modal confinement.
FAU - Joy, Soumitra Roy
AU  - Joy SR
AUID- ORCID: 0000-0002-8363-3385
AD  - University of Michigan, Ann Arbor, MI 48109, USA.
FAU - Yu, Hao
AU  - Yu H
AD  - Southern University of Science and Technology, Shenzhen, People's Republic of 
      China.
FAU - Mazumder, Pinaki
AU  - Mazumder P
AD  - University of Michigan, Ann Arbor, MI 48109, USA.
LA  - eng
PT  - Journal Article
DEP - 20181212
PL  - England
TA  - Proc Math Phys Eng Sci
JT  - Proceedings. Mathematical, physical, and engineering sciences
JID - 9891746
PMC - PMC6304036
OTO - NOTNLM
OT  - band modulation
OT  - dispersion
OT  - frequency red-shift
OT  - planar structure
OT  - spoof plasmon
COIS- We declare we have no competing interests.
EDAT- 2019/01/04 06:00
MHDA- 2019/01/04 06:01
PMCR- 2019/12/01
CRDT- 2019/01/04 06:00
PHST- 2018/03/22 00:00 [received]
PHST- 2018/11/02 00:00 [accepted]
PHST- 2019/01/04 06:00 [entrez]
PHST- 2019/01/04 06:00 [pubmed]
PHST- 2019/01/04 06:01 [medline]
PHST- 2019/12/01 00:00 [pmc-release]
AID - rspa20180205 [pii]
AID - 10.1098/rspa.2018.0205 [doi]
PST - ppublish
SO  - Proc Math Phys Eng Sci. 2018 Dec;474(2220):20180205. doi: 10.1098/rspa.2018.0205. 
      Epub 2018 Dec 12.