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Enhanced optical nonlinearity in β-MnO2 nanowire network decorated with Ag nanoparticles.
- Source :
-
Optical Materials . Aug2021, Vol. 118, pN.PAG-N.PAG. 1p. - Publication Year :
- 2021
-
Abstract
- We report on enhanced nonlinear optical absorption and optical limiting in β-MnO 2 sponge-like nanowire network decorated with Ag nanoparticles excited by nanosecond laser. A simple two-step process is used to prepare the samples. The structure, morphology and the elemental analysis of the prepared samples are studied using x-ray diffraction, field emission scanning electron microscopy and energy-dispersive x-ray spectroscopy. Nonlinear optical absorption properties of the samples in solution is studied using the open aperture Z-scan technique employing 5 ns laser pulses at 532 nm. Nonlinear transmission measurements show that β-MnO 2 exhibit weak saturable absorption at low fluence and large optical limiting at high fluence, while upon decoration with Ag particles, Ag/β-MnO 2 shows strong saturable absorption at low fluence and enhanced optical limiting at higher fluence with an optical limiting threshold value three times lower than that of bare β-MnO 2 nanowires. The results indicate that these materials are potentially useful for constructing saturable absorbers and optical limiters. • β-MnO 2 nanowire network decorated with Ag nanoparticles. • Simple and cheap doped nanowire synthesis process. • Ag-doped β-MnO 2 nanowires may lead to cheap and efficient optical limiters. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09253467
- Volume :
- 118
- Database :
- Academic Search Index
- Journal :
- Optical Materials
- Publication Type :
- Academic Journal
- Accession number :
- 151227653
- Full Text :
- https://doi.org/10.1016/j.optmat.2021.111226