Synergistic effects of CdS QDs – Neutral red dye hybrid system on its nonlinear optical properties
| Autor: | V. P. N. Nampoori, Alina C. Kuriakose, T. Priya Rose, Sheenu Thomas, Sony Udayan |
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| Rok vydání: | 2021 |
| Předmět: |
Neutral red
education.field_of_study Materials science business.industry Population Nanophotonics 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Fluence Atomic and Molecular Physics and Optics 0104 chemical sciences Electronic Optical and Magnetic Materials chemistry.chemical_compound Nonlinear system chemistry Quantum dot Hybrid system Optoelectronics Electrical and Electronic Engineering Triplet state 0210 nano-technology business education |
| Zdroj: | Optics & Laser Technology. 142:107261 |
| ISSN: | 0030-3992 |
| DOI: | 10.1016/j.optlastec.2021.107261 |
| Popis: | One of the main goal in the area of nanophotonics is to reinforce the nonlinear optical effects at low input fluence. In this regard, nanohybrids have received special attention which render remarkable third-order nonlinear optical properties. Herein, we have studied the nonlinear optical properties of CdS Quantum Dots (QDs) - Neutral Red (NR) nanohybrid system using Z-scan technique and report the development of functional materials for optical limiting applications. Open aperture Z-scan results suggests that reverse saturable absorption is the predominant mechanism behind the observed nonlinear effects and it can be ascribed to enhanced triplet state population. A significant enhancement in the nonlinear absorption coefficient, nonlinear refraction and third-order nonlinear susceptibility is observed with the nanohybrids as compared to their individual components. The enhanced nonlinear properties can be attributed to cumulative effects of distinct nonlinear mechanisms. |
| Databáze: | OpenAIRE |
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