论文标题
在Picsecond Ultrasound中，在透明独立的钻石薄膜中抑制布里鲁因振荡
Suppression of Brillouin oscillation in transparent free-standing diamond thin films in picosecond ultrasound
论文作者
论文摘要
Brillouin振荡出现在透明标本的皮秒超声波中，因为通过移动应变脉冲向后光散射。它的幅度与其他响应的幅度相当，例如脉搏回声信号和厚度共振，掩盖了这些非易裂蛋白振荡响应。我们在这里发现，通过用适当厚度的金属薄膜涂覆双方，可以在透明的独立薄膜中抑制布里鲁因振荡，并且这种特殊的行为是由两侧产生的菌株脉冲引起的，并且相差很小。这种现象使我们能够制造一部无布洛林振荡的钻石独立式膜，该电影显示出很高的传感器应用功能。
Brillouin oscillation appears in picosecond ultrasonics for a transparent specimen because of backward light scattering by moving strain pulse. Its amplitude is comparable with those of other responses, such as pulse-echo signals and through-thickness resonance, obscuring these non-Brillouin-oscillation responses. We here find that Brillouin oscillation can be suppressed in a transparent free-standing film by coating both sides with metallic thin film of appropriate thickness and that this peculiar behavior is caused by strain pulses generated on both sides with a slight phase difference. This phenomenon allowed us to fabricate a Brillouin-oscillation-free diamond free-standing film, which showed high capability for sensor applications.
