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Dynamically tunable plasmon induced absorption in graphene-assisted metallodielectric grating
Optics Express
|October 19, 2017
Summary
This study demonstrates tunable plasmon induced absorption (PIA) in a graphene-assisted structure. The tunable PIA effect in the mid-infrared region offers easier fabrication for modulators, absorbers, and sensors.
Area of Science:
- Plasmonics
- Optoelectronics
- Materials Science
Background:
- Plasmon induced absorption (PIA) is a phenomenon with potential applications in optical devices.
- Achieving dynamic tunability in PIA effects is crucial for advanced functionalities.
- Graphene and metallodielectric structures offer promising platforms for optical control.
Purpose of the Study:
- To demonstrate a dynamically tunable plasmon induced absorption (PIA) effect.
- To explore tunability in the mid-infrared region using a graphene-assisted metallodielectric grating.
- To investigate methods for achieving high tunability in PIA amplitude and bandwidth.
Main Methods:
- Utilizing a graphene-assisted metallodielectric grating structure.
- Implementing dynamic tunability via gate voltage control of graphene's chemical potential.
- Employing variations in the interlayer refractive index for tunability.
Main Results:
- Successfully demonstrated dynamically tunable PIA effect in the mid-infrared.
- Achieved high tunability in both amplitude and bandwidth of the PIA.
- The proposed scheme offers simpler fabrication compared to previous methods.
Conclusions:
- The graphene-assisted metallodielectric grating enables efficient and tunable PIA.
- The demonstrated tunability methods are effective for mid-infrared applications.
- This work has significant implications for the development of modulators, absorbers, and sensors.
