Enhanced nonlinear optical response of linear carbon chain colloid mixed with silver nanoparticles |
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| Authors: | E Fazio S Patanè L D'Urso G Compagnini F Neri |
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| Institution: | 1. Dipartimento di Fisica della Materia e Ingegneria Elettronica, Università di Messina, Viale Ferdinando Stagno d''Alcontres 31, I-98166 Messina, Italy;2. Dipartimento di Scienze Chimiche, Università di Catania, Viale A. Doria 6, I-95129 Catania, Italy;1. Shaanxi Key Laboratory of Nanomaterials and Nanotechnology, Xi’an University of Architecture and Technology, 710055 Xi’an, P.R. China;2. Department of Natural and Mathematic Sciences, Turin Polytechnic University in Tashkent, Kichik Halqa Yo’li 17, Tashkent 100095, Uzbekistan;3. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA;1. School of Life Science and Technology, Tongji University, Shanghai 200092, PR China;2. Med-X Research Institute of Shanghai Jiaotong University, Shanghai 200240, PR China;1. Department of Physics, Faculty of Science, University of Isfahan, HezarJeribSt., 81764-73441 Isfahan, Iran;2. Quantum Optics Group, Department of Physics, University of Isfahan, HezarJerib St., 81746-73441 Isfahan, Iran;1. Institute of Nanoscience and Nanotechnology, University of Kashan, Kashan, P.O. Box 87317-51167, Iran;2. Laser and Plasma Research Institute, Shahid Beheshti University, G. C, 1983963113, Evin, Tehran, Iran |
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| Abstract: | Nanostructured silver and linear carbon chain (LCC) particle water colloids were prepared by a pulsed laser ablation procedure. Sample's optical transmission response was investigated in the 190–900 nm range, the third-order nonlinear optical properties were studied using the z-scan method and a nanosecond laser. The silver nanoparticles induce a structural change in the LCC colloids: the mixed Ag and LCC optical absorption looses the signature of the short carbon chain maintaining the features attributable to the longer ones. The stability of LCC colloids and their nonlinear response are remarkably improved by the Ag nanoparticles addition to the carbon water colloids. The Ag nanoparticles induce a limiting threshold reduction, an increased nonlinear absorption coefficient β and a marked asymmetrical peak/valley profile of the (Ag:LCC)mix when compared to the LCC. All these nonlinear contributions determine the increase of the third order susceptibility, while maintaining a significantly high linear transmission value (75%) at 532 nm and high photostability. The magnitude of the nonlinear optical response of these nanohybrids makes them promising candidates for potential optoelectronic applications. |
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