@ARTICLE{Rizzato2017,
author={Rizzato, S. and Scigliuzzo, M. and Chiriaco, M.S. and Scarlino, P. and Monteduro, A.G. and Maruccio, C. and Tasco, V. and Maruccio, G.},
title={Excitation and time resolved spectroscopy of SAW harmonics up to GHz regime in photolithographed GaAs devices},
journal={Journal of Micromechanics and Microengineering},
year={2017},
volume={27},
number={12},
doi={10.1088/1361-6439/aa8186},
art_number={125002},
note={cited By 3},
url={https://www.scopus.com/inward/record.uri?eid=2-s2.0-85038352512&doi=10.1088%2f1361-6439%2faa8186&partnerID=40&md5=0c4158cd0361e07e0822380bf740019c},
abstract={In this work, we demonstrate the excitation of surface acoustic waves (SAW) harmonics up to GHz regime in photolitographed devices fabricated on gallium arsenide (GaAs) by acting on the IDT metallization ratio among the finger width and pitch. Specifically, we observed up to the 13th harmonic, which corresponds to a frequency of about 1.7 GHz. Moreover, we employed time-resolved spectroscopy for isolating the shape of the SAW bandpassfilter response (for each harmonic) eliminating the interference between acoustic and electromagnetic waves. Notably, the extracted SAW spectra are characterized by a bandwidth which remains constant for the different harmonic modes, unlike the case of traditional SAW filters (having a 0.5 metallization ratio) where the pass band δf = fo/np increaseswith theworking frequency. These results are relevant for applications where high frequencies and multiple harmonics excitation are desirable, or where quantitative measurements of the direct SAW signal are required.},
publisher={Institute of Physics Publishing},
issn={09601317},
coden={JMMIE},
document_type={Article},
source={Scopus},
}

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