Second-harmonic generation of ZnO nanoparticles synthesized by laser ablation of solids in liquids

•Small (5–8nm) ZnO nanoparticles synthetized with LASL technique.•Comparable SHG signal from random ZnO monocrystalline NPs and aggregated ZnO NPs.•Efficiency of the SHG process may not depend on the ZnO NPs size/aggregation. We report the synthesis of small zinc oxide nanoparticles (ZnO NPs) based...

Full description

Saved in:
Bibliographic Details
Published in:Optics and laser technology 2018-02, Vol.99, p.118-123
Main Authors: Rocha-Mendoza, Israel, Camacho-López, Santiago, Luna-Palacios, Yryx Y., Esqueda-Barrón, Yasmín, Camacho-López, Miguel A., Camacho-López, Marco, Aguilar, Guillermo
Format: Article
Language:English
Subjects:
Acetone
Glass substrates
Laser ablation
Laser ablation of solid in liquids
Liquids
Nanoparticle synthesis
Nanoparticles
NLO microscopy
Second harmonic generation
Semiconductor lasers
Spheroids
Substrates
YAG lasers
Zinc oxide
Zinc oxides
ZnO nanoparticles
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•Small (5–8nm) ZnO nanoparticles synthetized with LASL technique.•Comparable SHG signal from random ZnO monocrystalline NPs and aggregated ZnO NPs.•Efficiency of the SHG process may not depend on the ZnO NPs size/aggregation. We report the synthesis of small zinc oxide nanoparticles (ZnO NPs) based colloidal suspensions and the study of second-harmonic generation from aggregated ZnO NPs deposited on glass substrates. The colloidal suspensions were obtained using the laser ablation of solids in liquids technique, ablating a Zn solid target immersed in acetone as the liquid medium, with ns-laser pulses (1064nm) of a Nd-YAG laser. The per pulse laser fluence, the laser repetition rate frequency and the ablation time were kept constant. The absorption evolution of the obtained suspensions was optically characterized through absorption spectroscopy until stabilization. Raman spectroscopy, SEM and HRTEM were used to provide evidence of the ZnO NPs structure. HRTEM results showed that 5–8nm spheroids ZnO NPs were obtained. Strong second-harmonic signal is obtained from random ZnO monocrystalline NPs and from aggregated ZnO NPs, suggesting that the high efficiency of the nonlinear process may not depend on the NPs size or aggregation state.
ISSN:0030-3992
1879-2545
DOI:10.1016/j.optlastec.2017.08.021