Optical limiting response of Ag2 S nanoparticles synthesized by laser ablation of silver target in DMSO

Autor:	Rouhollah Karimzadeh, Leila Sarkhosh, Nastaran Mansour, Hoda Aleali
Rok vydání:	2010
Předmět:	chemistry.chemical_compound Laser ablation chemistry Nanocrystal Absorption spectroscopy Silver sulfide Analytical chemistry Nanoparticle Condensed Matter Physics Two-photon absorption Light scattering Electronic Optical and Magnetic Materials Pulsed laser deposition
Zdroj:	physica status solidi (b). 248:680-685
ISSN:	0370-1972
DOI:	10.1002/pssb.201046107
Popis:	Silver sulfide nanoparticles (Ag 2 S NPs) were synthesized by nanosecond pulsed laser ablation of a silver plate in dimethyl sulfoxide. Ultraviolet―visible absorption spectrometry, X-ray diffraction, and transmission electron microscopy were used to characterize the obtained nanocrystal samples. The mechanisms for optical limiting performance of an Ag 2 S NP colloid were investigated under exposure to nanosecond pulsed laser irradiation at 532 nm. The observed aperture dependence of the Ag 2 S NP limiting performance indicates that the nonlinear scattering plays an important role in the limiting action of the sample. The Ag 2 S NPs may enhance the absorption of laser light by the two-photon absorption process and induce a very high rise in the temperature of the sample, which leads to the formation of scattering centers.
Databáze:	OpenAIRE
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