Journal
JOURNAL OF NANOPARTICLE RESEARCH
Volume 20, Issue 10, Pages -Publisher
SPRINGER
DOI: 10.1007/s11051-018-4391-3
Keywords
Laser ablation; Titanium nanoparticles; Cobalt nanoparticles; Nonlinear refraction; Nonlinear absorption; Optical limiting; Colloids
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Funding
- National Key Research and Development Program of China [2017YFB1104700]
- National Natural Science Foundation of China [91750205, 61774155]
- Chinese Academy of Sciences President's International Fellowship Initiative [2018VSA0001]
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The studies of third-order nonlinear optical processes (nonlinear saturable absorption, reverse saturable absorption, two-photon absorption, and nonlinear refraction) in the titanium and cobalt nanoparticles synthesized by laser ablation of bulk materials in deionized water, toluene, and ethylene glycol are reported. The nanoparticle suspensions are systematically characterized by absorption spectroscopy, scanning electron microscopy, and Z-scan technique using 800nm and 400nm, 60fs pulses as well as 355nm, 6ns pulses. The concurrence of different nonlinear absorption processes in nanoparticle-containing suspensions is discussed. We also demonstrate the optical limiting of these nanoparticles in water using the 800nm, 60fs pulses.
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