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Title: Optical and nonlinear optical limiting properties of AgNi alloy nanostructures.
Authors: Udayabhaskar, R.
Sreekanth, P.
Karthikeyan, B.
Keywords: Surface plasmons
Excited state absorption (ESA)
Saturable absorption (SA)
Issue Date: Dec-2016
Publisher: Springer Verlag
Citation: Plasmonics, 2016, Vol. 11, p1461-1466
Abstract: Silver-nickel alloy nanoparticles with varying size were synthesized by reducing the metal precursors chemically using a single-step solution-based synthesis route. The structural, optical, and nonlinear optical properties of the prepared samples were investigated. The synthesized samples having highly agglomerated, interconnected nature and found to exhibit dipole and multipole surface plasmon resonance related optical absorption bands. Nonlinear optical and optical limiting properties were investigated using a single beam open aperture z-scan technique with the use of 532 nm, 5-ns laser pulses. The nonlinearity observed was found to have contributions from saturable absorption (SA) and excited state absorption (ESA) related to free carriers. The effective nonlinear optical absorption was enhanced in AgNi alloy compared to pure Ag nanostructures.
Description: Restricted Access. An open-access version is available at (one of the alternative locations)
ISSN: 1557-1955
1557-1963 -(Online)
Alternative Location: 10.1007/s11468-016-0197-2
Copyright: 2016 Springer Science Business Media
Appears in Collections:Research Papers (LAMP)

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