Programme

P.58 -- Poster, VCTP-46

Date: Wednesday, 6 October 2021

Time: 08:30 - 10:00

Significant enhancement of optical absorption of a monolayer graphene inside an optical microcavity

Vinh N.T. Pham (1), Chu Manh Hoang (2), Le Tri Dat (3,4), and Nguyen Duy Vy (3,4,*), Takuya Iida (5)

(1) Ho Chi Minh City University of Education, Ho Chi Minh City 748342, Vietnam; (2) International Training Institute for Materials Science, Hanoi University of Science and Technology, Hanoi 10000, Vietnam; (3) Laboratory of Applied Physics, Advanced Institute of Materials Science, Ton Duc Thang University, Ho Chi Minh City 756636, Vietnam; (4) Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City 756636, Vietnam; (5) RILACS, Osaka Prefecture University, Osaka 599-8570, Japan. (*) nguyenduyvy@tdtu.edu.vn

The natural optical absorption of a monolayer graphene is about 2.3% and enhancement of this absorption is of significant interest. In this talk, we present the possibility of increasing the absorption by using the optical microcavity (OMC). The enhancement of the optical field inside the cavity could enhance the optical density on the graphene surface. The analytical calculation shows that the absorption is greatly enhanced, up to several orders in magnitude. This result could help experimentalist obtaining other interesting phenomena in graphene layer. Further studies could be adopted for multilayer graphene and the dependence of the OMC optical properties on the position and orientation of the graphene layer.

Presenter: Nguyen Duy Vy