Non-degenerate parametric mixing and Q-enhancement in ALN Lamb wave resonator
| Autor: | Lap K. Yeung, Gregory P. Carman, Xiating Zou, Rob N. Candler, Ting Lu, Yuanxun Ethan Wang, Sidhant Tiwari, Joseph D. Schneider |
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| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Coupling Materials science Physics and Astronomy (miscellaneous) Negative resistance Acoustics Phase (waves) Resonance 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Resonator Nonlinear system Lamb waves 0103 physical sciences 0210 nano-technology Parametric statistics |
| Zdroj: | Applied Physics Letters. 118:254101 |
| ISSN: | 1077-3118 0003-6951 |
| DOI: | 10.1063/5.0053818 |
| Popis: | In this Letter, we explore a non-degenerate phase independent parametric quality factor (Q)-enhancement technique for aluminum nitride (AlN) Lamb wave resonators. Unlike other active Q-enhancement techniques which require precise phase control of the electronic feedback loop, this technique is implemented by parametrically pumping AlN material stiffness to realize a negative resistance seen at the signal path. The negative resistance is dependent on the nonlinear material modulation and multi-resonance coupling in the device. A nonlinear circuit model is developed to simulate the parametric coupling of each resonance and extract the nonlinearity of AlN from experimental data. With proper pump frequency and pump power, the device quality factor is boosted in both simulation and experiment. The demonstrated Q-enhancement method is simple to implement and can be applied to other types of resonators that have nonlinear behavior and support multi-resonance operation. |
| Databáze: | OpenAIRE |
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