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Inne
Comparison of third-order nonlinear optical properties of colloidal gold nanoshells and nanorods.
Autorzy
Rok wydania
2014
Czasopismo
Numer woluminu
9163
Strony
91630V/1-91630V/6
DOI
10.1117/12.2059632
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
A detailed comparison of third-order nonlinear optical properties of colloidal gold nanoshells (NSs) and gold nanorods (NRs) in water solutions has been carried out with the open- and closed-aperture Z-scan measurements, performed with femtosecond laser pulses over a broad range of wavelengths. Absorption saturation was found to be a dominant effect for all the studied nanoparticles, however two-photon absorption properties are also detected, especially at the shortest wavelengths studied. The value of the merit factor σ2/M (two-photon absorption cross section scaled by the molecular weight) for the NRs (10nm × 35 nm) at 530 nm is 7.5 (GM·mol/g), while for the NSs is 1.9 (GM·mol/g) at the same wavelength.
Słowa kluczowe
Gold nanorods, gold nanoshells, Z-scan technique, nonlinear, optical properties
Adres publiczny
http://dx.doi.org/10.1117/12.2059632
Strona internetowa wydawcy
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