| Texto completo | |
| Autor(es): |
Goswami, Saswata
;
de Oliveira, Caique Campos
;
Ipaves, Bruno
;
Mahapatra, Preeti Lata
;
Pal, Varinder
;
Sarkar, Suman
;
Autreto, Pedro A. S.
;
Ray, Samit K.
;
Tiwary, Chandra Sekhar
Número total de Autores: 9
|
| Tipo de documento: | Artigo Científico |
| Fonte: | LASER & PHOTONICS REVIEWS; v. N/A, p. 16-pg., 2025-03-10. |
| Resumo | |
Nickel ditelluride (NiTe2) is a newly identified Type-II Dirac semimetal, showing novel characteristics in electronic transport and optical experiments. This study explores the nonlinear optical properties of 2D NiTe2 using experimental and computational techniques (density functional theory-based approach). Few layered 2D-NiTe2 are synthesized using liquid phase exfoliation (LPE), which is characterized using X-ray diffraction technique, transmission electron, and atomic force microscopy. The nonlinear refractive index (n(2)) and third-order nonlinear susceptibility (chi((3))(total)) of the prepared 2D-NiTe2 are determined from the self-induced diffraction pattern generated using different wavelengths (lambda = 650, 532, and 405 nm) in the far field. In addition, the diffraction pattern generated by spatial self-phase modulation (SSPM) is further verified by varying concentration (2D-NiTe2 in the IPA solvent), wavelength (of incoming laser beams), and cuvette width (active path length). The high value of third-order nonlinear susceptibility for a monolayer chi((3))(monolayer) (in order of x10(-9) e.s.u.) determined using SSPM in the 2D-NiTe2 can be attributed to the laser-induced hole coherence effect. Last, utilizing the reverse saturable absorption property of 2D-hBN, asymmetric light propagation is also demonstrated in the 2D-NiTe2/2D-hBN heterostructure. (AU) | |
| Processo FAPESP: | 24/11376-6 - Catalisadores pH-Universais Baseados em Nanoestruturas 2D e Heteroestruturas de van der Waals para Reações de Evolução de Hidrogênio |
| Beneficiário: | Caique Campos de Oliveira |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |