Temat: Z-scan - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Nonlinear-optical refraction of silver nanoparticle composites
Autorzy:: Gamernyk, R
Periv, M
Malynych, S
Powiązania:: https://bibliotekanauki.pl/articles/173720.pdf
Data publikacji:: 2014
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: silver nanoparticles
nonlinear optics
Z-scan
Opis:: In this paper, the experimental data on nonlinear refraction of silver nanoparticle composites using a standard Z-scan technique are presented. It was found that the colloids of silver nanoparticles of various size possess a defocusing ability. Based on general considerations, one can conclude thermal lens nature of the nonlinear refraction of the colloids. Significantly different magnitudes of the nonlinear refractive index of silver nanoparticles suspended in water and in glycerol can be explained by differences in the specific heat capacity of mentioned fluids. The effective thickness for nonlinear-optical interaction of light with a two-dimensional silver nanoparticle array was estimated.
Źródło:: Optica Applicata; 2014, 44, 3; 389-398
0078-5466
1899-7015
Pojawia się w:: Optica Applicata
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Study of Nonlinear Optical Properties of Nematic Liquid Crystal Material by Z-Scan Technique
Autorzy:: Mousa, Abdulazeez O.
Kadhim, Yaseen H.
Naser, Ban A.
Powiązania:: https://bibliotekanauki.pl/articles/1189947.pdf
Data publikacji:: 2016
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Nematic liquid crystal
Z-Scan technique
nonlinear refractive index
optical limiting
Opis:: The nonlinear optical properties of nematic liquid crystal material have been studied at different concentrations using Z-Scan technique. Experiments are performed using continuous wave (CW) diode solid state laser at 473 nm wavelength and 20 mW power. The nonlinear absorption coefficient β is calculated using open aperture Z-Scan data, while its nonlinear refractive index n2 is measured using the closed aperture Z-Scan data. In this work, six concentrations were prepared for (Di-Cinnamylidene Benzidine), these concentrations were (9×10-5, 8×10-5, 7×10-5, 6×10-5, 5× 10-5 and 4×10-5)M. The optical absorption and transmission spectra for these concentrations were measured by using UV-VIS spectrophotometer. Our results show that the nonlinearity are changed significantly with concentrations, in addition, the optical limiting behavior has been studied. The results confirmed the capability of the sample to be used as optical limiter device.
Źródło:: World Scientific News; 2016, 52; 57-69
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Nonlinear optical study of 1,1-methylenedipyridinium bis[tetrachloride gold(III)] hybrid salt
Autorzy:: Zidan, M.
Al-Ktaifani, M.
Allahham, A.
Powiązania:: https://bibliotekanauki.pl/articles/1055075.pdf
Data publikacji:: 2017-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 1,1'-methylenedipyridinium bis[tetrachloride gold (III)]
organic-metallic complex z-scan technique
Opis:: The third-order nonlinear optical properties of 1,1'-methylenedipyridinium bis[tetrachloride gold(III)] were investigated by the z-scan method using CW diode laser. The experimental results led to estimation of the nonlinear optical absorption coefficient (β), the nonlinear optical refraction (n₂), and third-order nonlinear optical susceptibility (χ³). Our results show that the excited-state absorption cross-sections (σ_{ex}) is larger than the ground-state absorption cross-sections (σ_{g}), this suggests that the nonlinear optical absorption in the MPTC gold(III) is due to the reverse saturable absorption mechanism. Furthermore, the obtained results suggest that our material is considered as a promising candidate for future optical devices applications.
Źródło:: Acta Physica Polonica A; 2017, 132, 4; 1379-1382
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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