Visualization of acoustic power flow in suspended thin-film lithium niobate phononic devices
We report direct visualization of gigahertz-frequency acoustic waves in lithium niobate phononic circuits. Primary propagation parameters, such as the power flow angle and propagation loss, are measured by transmission-mode microwave impedance microscopy. Using a fast Fourier transform, we can separ...
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| Published in | Applied physics letters Vol. 119; no. 21 |
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| Main Authors | , , , , |
| Format | Journal Article |
| Language | English |
| Published |
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American Institute of Physics
22.11.2021
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| Abstract | We report direct visualization of gigahertz-frequency acoustic waves in lithium niobate phononic circuits. Primary propagation parameters, such as the power flow angle and propagation loss, are measured by transmission-mode microwave impedance microscopy. Using a fast Fourier transform, we can separately analyze forward and backward propagating waves and quantitatively evaluate the propagation loss. Our work provides insightful information on the propagation, diffraction, and attenuation in piezoelectric thin films, which is highly desirable for designing and optimizing phononic devices for microwave signal processing. |
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| AbstractList | We report direct visualization of gigahertz-frequency acoustic waves in lithium niobate phononic circuits. Primary propagation parameters, such as the power flow angle and propagation loss, are measured by transmission-mode microwave impedance microscopy. Using a fast Fourier transform, we can separately analyze forward and backward propagating waves and quantitatively evaluate the propagation loss. Our work provides insightful information on the propagation, diffraction, and attenuation in piezoelectric thin films, which is highly desirable for designing and optimizing phononic devices for microwave signal processing. |
| Author | Lee, Daehun Gong, Songbin Lu, Ruochen Meyer, Shawn Lai, Keji |
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| Cites_doi | 10.1016/j.rinp.2020.103082 10.1038/299044a0 10.1063/1.5126428 10.1364/OL.420250 10.1109/JMEMS.2019.2922935 10.1103/PhysRevApplied.16.034047 10.1063/1.107016 10.1109/JMEMS.2021.3092724 10.1109/TUFFC.889 10.1109/TMTT.2020.3027694 10.1063/1.111552 10.1109/JMW.2021.3064825 10.1063/1.4995008 10.1063/1.2840183 10.1063/1.3563707 10.1063/1.121701 10.1063/1.5013161 10.1109/MMM.2020.3008240 10.1103/PhysRevApplied.9.061002 10.1109/MMM.2015.2429513 10.1109/MMM.2015.2429512 10.1109/ACCESS.2019.2939938 10.1007/BF00614817 |
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| SubjectTerms | Acoustic propagation Acoustic waves Applied physics Attenuation Fast Fourier transformations Fourier transforms Lithium niobates Piezoelectricity Power flow Propagation Signal processing Thin films Visualization Wave propagation |
| Title | Visualization of acoustic power flow in suspended thin-film lithium niobate phononic devices |
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