An Ultrasonic analog for a laser

Details An Ultrasonic analog for a laser An Ultrasonic analog for a laser

2005-09-26

arxiv.org/abs/physics/0509215v2

Physics

Classical Physics

Scientific paper

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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