Observation of ultra-narrow band plasmon induced transparency based on large-area hybrid plasmon-waveguide systems
Abstract
We report the observation of an ultra-narrow band plasmon induced transparency resonance which is realized in a large area hybrid plasmon-waveguide system consisting of a gold nanowire array embedded in a slab waveguide. Due to the destructive interference between optical modes supported by the hybrid system, an ultra-narrow plasmon induced transparency resonance with a bandwidth of 8 nm at the wavelength of 966 nm was obtained (i.e., ∼1/120 of the peak wavelength at the incident angle of 60°). The group velocity is estimated to be ∼76, which is promising for miniaturized slow-light components.
- Publication:
-
Applied Physics Letters
- Pub Date:
- October 2011
- DOI:
- 10.1063/1.3659309
- Bibcode:
- 2011ApPhL..99r1120Z
- Keywords:
-
- gold;
- nanowires;
- optical waveguides;
- self-induced transparency;
- semiconductor quantum wires;
- slow light;
- surface plasmon resonance;
- 42.79.Gn;
- 68.65.La;
- 81.07.Gf;
- 42.50.Gy;
- 42.50.Md;
- 42.65.Wi;
- Optical waveguides and couplers;
- Quantum wires;
- Effects of atomic coherence on propagation absorption and amplification of light;
- electromagnetically induced transparency and absorption;
- Optical transient phenomena: quantum beats photon echo free-induction decay dephasings and revivals optical nutation and self-induced transparency;
- Nonlinear waveguides