THz absorption in Graphene Quantum Dots

S. Massabeau , E. Riccardi , M. Rosticher , C. Berger (1, 2) , W. de Heer , J. Tignon , S. Dhillon , R. Ferreira , J. Mangeney

1 ECE GeorgiaTech - School of Electrical and Computer Engineering - Georgia Insitute of Technology
2 Georgia Tech Lorraine [Metz]

We study the optical response of multilayer graphene quantum dots at THz frequencies. We fabricate 73 nm diameter graphene quantum dots in an array of ~1mm 2 size. We demonstrate optical absorbance of these graphene quantum dots from 0.85 to 4.7 THz and study the absorption dependence with the temperature from 4K to 300 K.

Mots clés: Graphene; Quantum dots; Absorption; Ultrafast optics; Optical device fabrication; Optical imaging; Plasma temperature

Domaines: Sciences de l'ingénieur [physics]

S. Massabeau, E. Riccardi, M. Rosticher, C. Berger, W. de Heer, et al.. THz absorption in Graphene Quantum Dots. 2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Sep 2019, Paris, France. IEEE, pp.1-1, 2019, ⟨10.1109/IRMMW-THz.2019.8874059⟩. ⟨hal-03455291⟩