Acoustic Purcell Effect for Enhanced Emission

Maryam Landi; Jiajun Zhao; Wayne E. Prather; Ying Wu; Likun Zhang

doi:10.1103/PhysRevLett.120.114301

Acoustic Purcell Effect for Enhanced Emission

Maryam Landi, Jiajun Zhao, Wayne E. Prather, Ying Wu, Likun Zhang^*

^*Corresponding author for this work

Computer, Electrical and Mathematical Sciences and Engineering

Research output: Contribution to journal › Article › peer-review

79 Scopus citations

Abstract

We observe that our experimentally measured emission power enhancement of a speaker inside a previously proposed metacavity agrees with our numerically calculated enhancement of the density of states (DOS) of the source-cavity system. We interpret the agreement by formulating a relation between the emitted sound power and the acoustic DOS. The formulation is an analog to Fermi's golden rule in quantum emission. The formulation complements the radiation impedance theory in traditional acoustics for describing sound emission. Our study bridges the gap between acoustic DOS and the acoustic Purcell effect for sound emission enhancement.

Original language	English (US)
Article number	114301
Journal	Physical Review Letters
Volume	120
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevLett.120.114301
State	Published - Mar 13 2018

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© 2018 American Physical Society.

ASJC Scopus subject areas

General Physics and Astronomy

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title = "Acoustic Purcell Effect for Enhanced Emission",

abstract = "We observe that our experimentally measured emission power enhancement of a speaker inside a previously proposed metacavity agrees with our numerically calculated enhancement of the density of states (DOS) of the source-cavity system. We interpret the agreement by formulating a relation between the emitted sound power and the acoustic DOS. The formulation is an analog to Fermi's golden rule in quantum emission. The formulation complements the radiation impedance theory in traditional acoustics for describing sound emission. Our study bridges the gap between acoustic DOS and the acoustic Purcell effect for sound emission enhancement.",

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AU - Landi, Maryam

AU - Zhao, Jiajun

AU - Prather, Wayne E.

AU - Wu, Ying

AU - Zhang, Likun

PY - 2018/3/13

Y1 - 2018/3/13

N2 - We observe that our experimentally measured emission power enhancement of a speaker inside a previously proposed metacavity agrees with our numerically calculated enhancement of the density of states (DOS) of the source-cavity system. We interpret the agreement by formulating a relation between the emitted sound power and the acoustic DOS. The formulation is an analog to Fermi's golden rule in quantum emission. The formulation complements the radiation impedance theory in traditional acoustics for describing sound emission. Our study bridges the gap between acoustic DOS and the acoustic Purcell effect for sound emission enhancement.

AB - We observe that our experimentally measured emission power enhancement of a speaker inside a previously proposed metacavity agrees with our numerically calculated enhancement of the density of states (DOS) of the source-cavity system. We interpret the agreement by formulating a relation between the emitted sound power and the acoustic DOS. The formulation is an analog to Fermi's golden rule in quantum emission. The formulation complements the radiation impedance theory in traditional acoustics for describing sound emission. Our study bridges the gap between acoustic DOS and the acoustic Purcell effect for sound emission enhancement.

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U2 - 10.1103/PhysRevLett.120.114301

DO - 10.1103/PhysRevLett.120.114301

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JO - Physical Review Letters

JF - Physical Review Letters

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ER -

Acoustic Purcell Effect for Enhanced Emission

Abstract

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