Large nonlinear absorption in single aggregate of silver nanoparticles observed with z-scan imaging technique
Hendry Izaac Elim
Affiliations
Hendry Izaac Elim
Nanomaterials for Photonics Nanotechnology Laboratory (N4PN Lab.), Department of Physics, Faculty of Mathematics and Natural Sciences (FMIPA), Pattimura University, Jl. Ir. M. Putuhena, Poka, Ambon 97233, Indonesia; Nanotechnology Research Center and Innovative Creation (PPNRI), Research and Society Center of Pattimura University (LPPM), Jl. Mr. CHR. Soplanit, Rumah Tiga, Ambon 97234, Indonesia; Multidisciplinary Research Center of Excellence (MrCE), Pattimura University, Jl. Dr. Leimena, Ambon 97234, Indonesia; Multidisciplinary Bioinformatics Laboratory (MB Lab.), Biology Department, Pattimura University, Jl. Ir. Martinus Putuhena, Poka, Ambon 97233, Indonesia; Theoretical Physics Laboratory (TP Lab.), Department of Physics, Pattimura University, Jl. Ir. M. Putuhena, Poka, Ambon 97233, Indonesia; Electronics and Instrumentation Division Laboratory (ELINS Lab.), Department of Physics, Pattimura University, Jl. Ir. M. Putuhena, Poka, Ambon 97233, Indonesia; Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aobaku, Sendai 980-8577, Japan; and Ambon Academy of Science and Arts (A-ASA), Kapitan Permata Street, Ambon Island 97582, Indonesia
Although nonlinear optical spectroscopy of nanostructures, nanomaterials, and nanomedicines has been widely used to observe and study the nature of nonlinear optical (NLO) phenomena, the field has to improve for the single nanostructure system. However, it is extremely difficult to investigate the nonlinear optical behaviors of single nanostructure materials because the optical setup used in the experiment has to obligate a high resolution imaging arrangement and overcome the diffraction limit problem. This paper presents that a newly modified z-scan technique with imaging as a starting point for nonlinear optics measurement technology has been successfully implemented to investigate silver nanoparticle aggregation. Such single aggregation with a diameter of ∼1.56 µm made from silver nanoparticles has been precisely observed with an imaging profile on an aggregation target with a large nonlinear absorption coefficient of 8.90 × 109 cm/GW. This technique suggests a wide impact application for a better understanding and knowledge in conjunction with the origin of NLO behavior in any nanomaterials, including nanomedicines.
