Details

Autor(en) / Beteiligte

• Ghayeb Zamharir, Sara
• Karimzadeh, Rouhollah
• Aboutalebi, Seyed Hamed

Titel

Laser-assisted tunable optical nonlinearity in liquid-phase exfoliated MoS2 dispersion

Ist Teil von

• Applied physics. A, Materials science & processing, 2018-10, Vol.124 (10), p.1-8, Article 692

Ort / Verlag

Berlin/Heidelberg: Springer Berlin Heidelberg

Erscheinungsjahr

2018

Quelle

SpringerNature Journals

Beschreibungen/Notizen

• The paper aims to explain the effect of laser irradiation on the nonlinear optical (NLO) response of MoS 2 nanosheets. MoS 2 -layered nanostructures were prepared by liquid-phase exfoliation (LPE) in deionized (DI) water. The characterization of MoS 2 dispersion proves the formation of 2-3-layered 2H-MoS 2 nanosheets with less than 100 nm lateral dimension. The NLO response of prepared dispersion was explored using the Z-scan technique with 532 nm continuous wave (CW) laser beam at 30, 50, 70 mW powers. The main finding of this research is that the nonlinear refractive index ( n 2 ) of MoS 2 dispersion is a laser-assisted tunable quantity. It has been shown that the nonlinear refractive index of MoS 2 nanosheets is altered up to 48% of its initial value only by 1-h laser irradiation with 30 mW power.