Piezoelectrically pumped parametric amplification and Q enhancement in an electromechanical oscillator
Piezoelectrically pumped parametric amplification and Q enhancement in an electromechanical oscillator
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DOI：
10.1063/1.2903709
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发表时间：
2008-04-28
影响因子：
4
通讯作者：
Yamaguchi, H.
中科院分区：
文献类型：
--
作者：
Mahboob, I.;Yamaguchi, H.
机电振荡器的频率响应是在通过压电效应通过双频率调制参数泵浦至有效弹簧常数时测量的。通过增加泵浦功率观察到谐振幅度增加了 13 dB，其中进一步的增加受到基模参数激励的限制。同时，相干放大导致谐振的品质因数也提高了大约2.5倍。这里演示的片上简并压电参量放大可以在纳米机电振荡器中实现，以绕过尺寸最小化的有害影响。 (c) 2008 年美国物理研究所。
The frequency response of an electromechanical oscillator was measured while being parametrically pumped by double frequency modulations to the effective spring constant via the piezoelectric effect. A 13 dB gain in the resonance amplitude was observed by increasing the pump power where further increase was limited by parametric excitation of the fundamental mode. Concurrently, the coherent amplification resulted in the quality factor of the resonance also being enhanced by similar to 2.5 times. The on-chip degenerate piezoelectric parametric amplification demonstrated here could be implemented in nanoelectromechanical oscillators to bypass the detrimental effects of size minimization. (c) 2008 American Institute of Physics.