Enhanced optical nonlinearity in β-MnO2 nanowire network decorated with Ag nanoparticles

Manish Kumar*, Sreekanth Perumbilavil, Alok Goel, Reji Philip

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

10 Sitaatiot (Scopus)

Abstrakti

We report on enhanced nonlinear optical absorption and optical limiting in β-MnO2 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-MnO2 exhibit weak saturable absorption at low fluence and large optical limiting at high fluence, while upon decoration with Ag particles, Ag/β-MnO2 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-MnO2 nanowires. The results indicate that these materials are potentially useful for constructing saturable absorbers and optical limiters.

AlkuperäiskieliEnglanti
Artikkeli111226
Sivumäärä6
JulkaisuOptical Materials
Vuosikerta118
DOI - pysyväislinkit
TilaJulkaistu - elok. 2021
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

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