Fifth-order optical nonlinear response of semiconducting 2D LTMD MoS2
Abstract
The effective fifth-order susceptibility, , of two-dimensional (2D) semiconducting layered transition metal dichalcogenide (LTMD) molybdenum disulfide ( ) is reported here for the first time, to the best of our knowledge. Using the -scan technique with a laser operating at 800 nm, 1 kHz, 100 fs, we investigated the nonlinear behavior of suspended in acetonitrile (concentration, 70 µg/ml). The effective nonlinear refractive index , proportional to , was measured for monolayer nanoflakes, prepared by a modified redox exfoliation method. We also determined the value of the nonlinear refractive index , which is related to the material’s effective third-order optical susceptibility real part, . For comparison, we also investigated the nonlinear response of tungsten disulfide ( ) monolayers, prepared by the same method and suspended in acetonitrile (concentration, 40 µg/ml), which only exhibited the third-order nonlinear effect in the same intensity range, up to . Nonlinear absorption was not observed in either or .
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 05, 2021
- Source ID
- 10.1364/ol.409578
Entities
People
- Ali M. Jawaid
- Allyson J. Ritter
- Anderson S. L. Gomes
- Cid Bartolomeu de Araújo
- Leonardo de S. Menezes
- Manoel L da Silva-Neto
- Melissa Maldonado
- Richard A. Vaia
- Robert Busch
Organizations
- Air Force Office of Scientific Research
- Coordenação de Aperfeicoamento de Pessoal de Nível Superior
- Fundação de Amparo à Ciência e Tecnologia de Pernambuco
- National Council for Scientific and Technological Development