Experimental Investigation of the Nonlinear Properties of NbX2 Hybrid LTMDs (Layered Transition Metal Dichalcogenides) Materials in the Near-Infrared Spectral Region
Abstract
The project Nonlinear Photonics in NbX2 (X=S, Se, Te) based Hybrid Layered Transition Metal Dichalcogenides (LTMDs) aimed at evaluating the nonlinear optical properties of a particular family of Hybrid Layered Transition Metal Dichalcogenides (H-LTMDs), whereby LTMDs were modified with organic/inorganic materials in order to enhance their nonlinear optical response. The two years project followed up NLO characterization of 04 different LTMDs, namely MoS2, WS2, NbS2 and ZrTe2, started in a former project, which is being extended in the first year for six new LTMDs (MoSe2, MoTe2, WSe2, WTe2, ZrSe2 and NbSe2). The NLO characterization included different spectro-temporal regimes, from femtosecond regime, normally associated with electronic response of the material, to the cw regime, which is associated with thermal response. For the 04 materials initially studied, the reported work in the femtosecond regime was already published (see publication list), whereby the nonlinear refraction and nonlinear absorption response in the femtosecond regimes were studied. Another manuscript reported on the intensity dependent thermally induced nonlinear optical response of the 10 samples of 2D Layered Transition Metal Dichalcogenides in Suspension (Acetonitrile) is under final review in ACS Photonics. The above work was carried out partially in 2020 and mainly in 2021/22. Finally, a manuscript on second order nonlinear effects measured by Hyper Rayleigh scattering was published under the support of the former grant by AFOSR. In the second year (2022), besides finalizing the thermal nonlinear response work, we studied the femtosecond time resolved nonlinear response of 04 LTMDs and two hybrid systems based on NbS2, using the Optical Kerr Gate (OKG) method. The results are in final stage of manuscript elaboration for submission to scientific Journals.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 17, 2023
- Accession Number
- AD1204477
Entities
People
- Anderson Gomes