Band structure of cavity-type hypersonic phononic crystals fabricated by femtosecond laser-induced two-photon polymerization
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Date
2016-05
Authors
Rakhymzhanov, A. M.
Gueddida, A.
Alonso-Redondo, E.
Utegulov, Zhandos
Perevoznik, D.
Kurselis, K.
Chichkov, B. N.
El Boudouti, E. H.
Djafari-Rouhani, B.
Fytas, G.
Journal Title
Journal ISSN
Volume Title
Publisher
Applied Physics Letters
Abstract
The phononic band diagram of a periodic square structure fabricated by femtosecond laser pulseinduced
two photon polymerization is recorded by Brillouin light scattering (BLS) at hypersonic
(GHz) frequencies and computed by finite element method. The theoretical calculations along the
two main symmetry directions quantitatively capture the band diagrams of the air- and liquid-filled
structure and moreover represent the BLS intensities. The theory helps identify the observed
modes, reveals the origin of the observed bandgaps at the Brillouin zone boundaries, and unravels
direction dependent effective medium behavior.
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Citation
A. M. Rakhymzhanov. A. Gueddida. E. Alonso-Redondo. Z. N. Utegulov. D. Perevoznik. K. Kurselis. B. N. Chichkov. E. H. El Boudouti. B. Djafari-Rouhani. G. Fytas. 2016. Band structure of cavity-type hypersonic phononic crystals fabricated by femtosecond laser-induced two-photon polymerization. Applied Physics Letters