Acoustic Purcell Effect for Enhanced Emission

Maryam Landi, Jiajun Zhao, Wayne E. Prather, Ying Wu, and Likun Zhang
Phys. Rev. Lett. 120, 114301 – Published 13 March 2018

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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  • Received 25 August 2017

DOI:https://doi.org/10.1103/PhysRevLett.120.114301

© 2018 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

Maryam Landi1, Jiajun Zhao2,3,†, Wayne E. Prather1, Ying Wu2,‡, and Likun Zhang1,*

  • 1National Center for Physical Acoustics and Department of Physics and Astronomy, University of Mississippi, University, Mississippi 38677, USA
  • 2King Abdullah University of Science and Technology (KAUST), Division of Computer, Electrical and Mathematical Sciences and Engineering, Thuwal 23955-6900, Saudi Arabia
  • 3GOWell International LLC, Houston, Texas 77041, USA

  • *Corresponding author. zhang@olemiss.edu
  • zhaojiajun1990@gmail.com
  • ying.wu@kaust.edu.sa

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Issue

Vol. 120, Iss. 11 — 16 March 2018

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