Multiwall MoS2 tubes as optical resonators

Dmitrii Kazanov (1) , A. V. Poshakinskiy (1) , V Yu Davydov (1) , A.N. Smirnov (1) , A. Eliseyev , D.A. Kirilenko (1) , M. Remskar (2) , S Fathipour (3) , A Mintairov (1) , A Seabaugh (3) , Bernard Gil (4) , T. Shubina (1)

1 A.F. Ioffe Physical-Technical Institute
2 IJS - Jozef Stefan Institute [Ljubljana]
3 UND - University of Notre Dame [Indiana]
4 L2C - Laboratoire Charles Coulomb

We study the optical properties of MoS2 nanotubes (NTs) with walls comprising dozens of monolayers. We reveal strong peaks in micro-photoluminescence (l-PL) spectra when detecting the light polarized along the NT axis. We develop a model describing the optical properties of the nanotubes acting as optical resonators which support the quantization of whispering gallery modes inside the NT wall. The experimental observation of the resonances in l-PL allows one to use them as a contactless method of the estimation of the wall width. Our findings open a way to use such NTs as polarization-sensitive components of nanophotonic devices.

Mots clés: 2D materialsnanotubesoptical resonators

Domaines: Autre [cond-mat.other]; Science des matériaux [cond-mat.mtrl-sci]

Dmitrii Kazanov, A. V. Poshakinskiy, V Yu Davydov, A.N. Smirnov, A. Eliseyev, et al.. Multiwall MoS2 tubes as optical resonators. Applied Physics Letters, 2018, 113 (10), pp.101106. ⟨10.1063/1.5047792⟩. ⟨hal-01871322⟩