Terahertz modulation using a bandpass filter combined with a graphene supercapacitor

Taylan Takan; Mehmet A. Nebioglu; Nurbek Kakenov; Osman Balci; Coskun Kocabas; Hakan Altan

doi:10.1117/12.2195140

21 October 2015 Terahertz modulation using a bandpass filter combined with a graphene supercapacitor

Taylan Takan, Mehmet A. Nebioglu, Nurbek Kakenov, Osman Balci, Coskun Kocabas, Hakan Altan

Proceedings Volume 9651, Millimetre Wave and Terahertz Sensors and Technology VIII; 96510F (2015) https://doi.org/10.1117/12.2195140
Event: SPIE Security + Defence, 2015, Toulouse, France

Abstract

Graphene is proving to be an efficient medium for the control of mm-wave/THz radiation. Its electrical and dielectric properties allows it to be incorporated into various existing device architectures. One such application is in the modulation of the amplitude of the propagating THz radiation. Due to its electrical properties this interaction is typically broadband in nature. To make this frequency selective we propose the use of metamaterials or frequency selective surfaces. Generally, these structures perform the frequency filtering by modifying the propagation of the input wave with respect to changing structural parameters of the device itself. By fabricating a frequency selective surface based on a periodic circular hole array on an aluminum sheet we show that the transmission of a narrow band of THz radiation can be modulated when the sheet is combined with a highly efficient graphene based supercapacitor device. The modulation depth of the device was 15% in the frequency region of interest. The simple structure of the device coupled with the obtained performance shows that graphene based devices have great potential for the development of THz technologies.

Citation Download Citation

Taylan Takan, Mehmet A. Nebioglu, Nurbek Kakenov, Osman Balci, Coskun Kocabas, and Hakan Altan "Terahertz modulation using a bandpass filter combined with a graphene supercapacitor", Proc. SPIE 9651, Millimetre Wave and Terahertz Sensors and Technology VIII, 96510F (21 October 2015); https://doi.org/10.1117/12.2195140

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available