Special Section on Nanoplasmonics

Z-scan studies of nonlinear optical properties of colloidal gold nanorods and nanoshells

[+] Author Affiliations
Marta Gordel

Wroclaw University of Technology, Institute of Physical and Theoretical Chemistry, Wyb. Wyspianskiego 27, Wroclaw 50-370, Poland

Laboratoire de Biologie et Pharmacologie Appliquée, CNRS, Ecole Normale Supérieure de Cachan, Avenue du Président Wilson 61, Cachan 94230, France

Radoslaw Kolkowski

Wroclaw University of Technology, Institute of Physical and Theoretical Chemistry, Wyb. Wyspianskiego 27, Wroclaw 50-370, Poland

Laboratoire de Photonique Quantique et Moléculaire, CNRS, Ecole Normale Supérieure de Cachan, Avenue du Président Wilson 61, Cachan 94230, France

Joanna Olesiak-Banska

Wroclaw University of Technology, Institute of Physical and Theoretical Chemistry, Wyb. Wyspianskiego 27, Wroclaw 50-370, Poland

Katarzyna Matczyszyn

Wroclaw University of Technology, Institute of Physical and Theoretical Chemistry, Wyb. Wyspianskiego 27, Wroclaw 50-370, Poland

Malcolm Buckle

Laboratoire de Biologie et Pharmacologie Appliquée, CNRS, Ecole Normale Supérieure de Cachan, Avenue du Président Wilson 61, Cachan 94230, France

Marek Samoć

Wroclaw University of Technology, Institute of Physical and Theoretical Chemistry, Wyb. Wyspianskiego 27, Wroclaw 50-370, Poland

J. Nanophoton. 9(1), 093797 (Dec 24, 2014). doi:10.1117/1.JNP.9.093797
History: Received October 3, 2014; Accepted November 25, 2014
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Abstract.  A quantitative comparison of third-order nonlinear optical properties of colloidal gold nanoshells (NSs) and gold nanorods (NRs) in water solutions has been carried out using 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 (2PA) properties were also detected, and were clearly resolved especially at the shortest wavelengths used. The value of the merit factor σ2/M (2PA cross section scaled by the molecular weight) for the NRs (10×35nm) at 530 nm is 7.5 (GM·mol/g), while for the NSs it is 1.9 (GM·mol/g) at the same wavelength.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Marta Gordel ; Radoslaw Kolkowski ; Joanna Olesiak-Banska ; Katarzyna Matczyszyn ; Malcolm Buckle, et al.
"Z-scan studies of nonlinear optical properties of colloidal gold nanorods and nanoshells", J. Nanophoton. 9(1), 093797 (Dec 24, 2014). ; http://dx.doi.org/10.1117/1.JNP.9.093797


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