dorsal/arxiv
View SchemaEntrainment and stimulated emission of auto-oscillators in an acoustic cavity
| Authors | Richard L Weaver, Oleg I Lobkis, Alexey Yamilov |
|---|---|
| Categories | |
| ArXiv ID | physics/0702043 |
| URL | https://arxiv.org/abs/physics/0702043 |
Abstract
We report theory, measurements and numerical simulations on nonlinear piezoelectric ultrasonic devices with stable limit cycles. The devices are shown to exhibit behavior familiar from the theory of coupled auto-oscillators. Frequency of auto-oscillation is affected by the presence of an acoustic cavity as these spontaneously emitting devices adjust their frequency to the spectrum of the acoustic cavity. Also, the auto-oscillation is shown to be entrained by an applied field; the oscillator synchronizes to an incident wave at a frequency close to the natural frequency of the limit cycle. It is further shown that synchronization occurs here with a phase that can, depending on details, correspond to stimulated emission: the power emission from the oscillator is augmented by the incident field. These behaviors are essential to eventual design of an ultrasonic system that would consist of a number of such devices entrained to their mutual field, a system that would be an analog to a laser. A prototype laser is constructed.
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"date_created": "2026-03-02T18:01:17.700000Z",
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"abstract": "We report theory, measurements and numerical simulations on nonlinear\npiezoelectric ultrasonic devices with stable limit cycles. The devices are\nshown to exhibit behavior familiar from the theory of coupled auto-oscillators.\nFrequency of auto-oscillation is affected by the presence of an acoustic cavity\nas these spontaneously emitting devices adjust their frequency to the spectrum\nof the acoustic cavity. Also, the auto-oscillation is shown to be entrained by\nan applied field; the oscillator synchronizes to an incident wave at a\nfrequency close to the natural frequency of the limit cycle. It is further\nshown that synchronization occurs here with a phase that can, depending on\ndetails, correspond to stimulated emission: the power emission from the\noscillator is augmented by the incident field. These behaviors are essential to\neventual design of an ultrasonic system that would consist of a number of such\ndevices entrained to their mutual field, a system that would be an analog to a\nlaser. A prototype laser is constructed.",
"arxiv_id": "physics/0702043",
"authors": [
"Richard L Weaver",
"Oleg I Lobkis",
"Alexey Yamilov"
],
"categories": [
"physics.class-ph",
"physics.gen-ph"
],
"title": "Entrainment and stimulated emission of auto-oscillators in an acoustic cavity",
"url": "https://arxiv.org/abs/physics/0702043"
},
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