SPECTRAL-TEMPORAL DYNAMICS OF TRANSIENT ABSORPTION OF MULTILAYER PERIODIC PLASMONIC NANOSTRUCTURES
Abstract
The features of the induced changes in the optical density spectra of multilayer Ag-Na3 AlF6 nanostructures under a femtosecond laser pulses exitation in the band of surface plasmonic resonance of absorption (SPRA) were studied. The dependence of the amplitude of the induced changes on the thickness of the dielectric Na3 AlF6 films separating the monolayeres of silver nanoparticles was registered. A significant increase of the optical response amplitude (up to 80 %) was found for the nanostructures with the quarter-wavelength Na3 AlF6 interlayers. For nanostructures with different-thickness dielectric Na3 AlF6 interlayers the characteristic relaxation times of induced changes at an excitation energy of 5–10 μJ do not practically vary, are equal to ~2 ps and coincide with the kinetic response time parameters of the used silver nanoparticle monolayers.
About the Authors
O. V. Buganov
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Belarus
Ph. D. (Physics and Mathematics), Deputy Head of the Laboratory of Physics of Infrared Rays
Belarus
Ph. D. (Physics and Mathematics), Deputy Head of the Laboratory of Physics of Infrared Rays
A. D. Zamkovets
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Belarus
Ph. D. (Physics and Mathematics), Senior Researcher of the Laboratory of Physics of Infrared Rays
Belarus
Ph. D. (Physics and Mathematics), Senior Researcher of the Laboratory of Physics of Infrared Rays
A. N. Ponyavina
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Belarus
D. Sc. (Physics and Mathematics), Associate Professor, Chief Researcher of the Laboratory of Physics of Infrared Rays
Belarus
D. Sc. (Physics and Mathematics), Associate Professor, Chief Researcher of the Laboratory of Physics of Infrared Rays
S. A. Tikhomirov
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Belarus
D. Sc. (Physics and Mathematics), Corresponding Member, Head of the Laboratory of Physics of Infrared Rays
Belarus
D. Sc. (Physics and Mathematics), Corresponding Member, Head of the Laboratory of Physics of Infrared Rays
Pham Hong Minh
Institute of Physics, Vietnam Academy of Science and Technology
Viet Nam
Ph. D. (Physics and Mathematics), Head of the Laboratory
Viet Nam
Ph. D. (Physics and Mathematics), Head of the Laboratory
Nguyen Thanh Binh
Institute of Physics, Vietnam Academy of Science and Technology
Viet Nam
Professor
Viet Nam
Professor
Nguyen Dai Hung
Institute of Physics, Vietnam Academy of Science and Technology
Viet Nam
Professor
Viet Nam
Professor
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