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An Ultrasonic analog for a laser

Richard L Weaver·Oleg I Lobkis·Alexey Yamilov
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Abstract

We report measurements on ultrasonic systems analogous to random lasers. One system entails unstable ultrasonic feedback between distinct transducers, another involves a piezoelectric device that emits spontaneously and by stimulation. Both systems are found to exhibit behaviors similar to those of lasers. Over a wide range of parameters we observe narrow single emission lines, sensitivity to linear cavity properties, complex multi-mode emissions, and line narrowing.

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Richard L Weaver, Oleg I Lobkis, Alexey Yamilov. 2005-09-26. An Ultrasonic analog for a laser. https://doi.org/10.1121/1.4786801

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