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首页> 外文期刊>Ultrasonics, Ferroelectrics and Frequency Control, IEEE Transactions on >High-performance brillouin spectroscopy of phonons induced by a piezoelectric thin film with a coaxial microwave resonator
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High-performance brillouin spectroscopy of phonons induced by a piezoelectric thin film with a coaxial microwave resonator

机译：带有同轴微波谐振器的压电薄膜诱发的声子的高性能百里香谱

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摘要

To overcome the low accuracy of acoustic velocity measurements based on Brillouin scattering from thermal phonons, we attempted to utilize induced coherent phonons, which cause intense Brillouin scattering. A ZnO piezoelectric film was used to induce gigahertz-range coherent phonons in a silica glass block sample. An evanescent electromagnetic wave leaked from a coaxial resonator was applied into the film to excite phonons. The scattered light obtained using this simple system was much more intense than that obtained from thermal phonons. This technique will improve the accuracy and reduce the measurement time.
机译：为了克服基于热声子的布里渊散射的声速测量精度低的问题，我们尝试利用引起强布里渊散射的感应相干声子。 ZnO压电薄膜用于在石英玻璃块样品中诱导千兆赫范围的相干声子。从同轴谐振器泄漏的瞬逝电磁波被施加到薄膜中以激发声子。使用这种简单系统获得的散射光比从热声子获得的散射光强得多。此技术将提高准确性并减少测量时间。

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