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

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

59 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)
Journal	Physical Review Letters
Volume	120
Issue number	11
DOIs	https://doi.org/10.1103/physrevlett.120.114301
State	Published - Mar 13 2018

Bibliographical note

KAUST Repository Item: Exported on 2021-02-19
Acknowledgements: This work is supported by the start-up fund from the University of Mississippi. The Center for Manufacturing Excellence at the University of Mississippi is acknowledged for providing the 3D printing service. J. Z. and Y. W. acknowledge the support from King Abdullah University of Science and Technology.

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10.1103/physrevlett.120.114301

https://repository.kaust.edu.sa/bitstream/10754/627350/1/PhysRevLett.120.114301.pdf

Cite this

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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{\textquoteright}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.",

author = "Maryam Landi and Jiajun Zhao and Prather, {Wayne E.} and Ying Wu and Likun Zhang",

note = "KAUST Repository Item: Exported on 2021-02-19 Acknowledgements: This work is supported by the start-up fund from the University of Mississippi. The Center for Manufacturing Excellence at the University of Mississippi is acknowledged for providing the 3D printing service. J. Z. and Y. W. acknowledge the support from King Abdullah University of Science and Technology.",

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month = mar,

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doi = "10.1103/physrevlett.120.114301",

language = "English (US)",

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AU - Landi, Maryam

AU - Zhao, Jiajun

AU - Prather, Wayne E.

AU - Wu, Ying

AU - Zhang, Likun

N1 - KAUST Repository Item: Exported on 2021-02-19 Acknowledgements: This work is supported by the start-up fund from the University of Mississippi. The Center for Manufacturing Excellence at the University of Mississippi is acknowledged for providing the 3D printing service. J. Z. and Y. W. acknowledge the support from King Abdullah University of Science and Technology.

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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UR - https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.120.114301

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SN - 0031-9007

VL - 120

JO - Physical Review Letters

JF - Physical Review Letters

IS - 11

ER -

Acoustic Purcell Effect for Enhanced Emission

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