Skip to main content

Research Repository

Advanced Search

Dynamics of a vertical cavity quantum cascade phonon laser structure

Maryam, W.; Akimov, Andrey V.; Campion, R.P.; Kent, Anthony

Authors

W. Maryam

Andrey V. Akimov

R.P. Campion



Abstract

Driven primarily by scientific curiosity, but also by the potential applications of intense sources of coherent sound, researchers have targeted the phonon laser (saser) since the invention of the optical laser over 50 years ago. Here we fabricate a vertical cavity structure designed to operate as a saser oscillator device at a frequency of 325 GHz. It is based on a semiconductor superlattice gain medium, inside a multimode cavity between two acoustic Bragg reflectors. We measure the acoustic output of the device as a function of time after applying electrical pumping. The emission builds in intensity reaching a steady state on a timescale of order 0.1 μs. We show that the results are consistent with a model of the dynamics of a saser cavity exactly analogous to the models used for describing laser dynamics. We also obtain estimates for the gain coefficient, steady-state acoustic power output and efficiency of the device.

Citation

Maryam, W., Akimov, A. V., Campion, R., & Kent, A. (2013). Dynamics of a vertical cavity quantum cascade phonon laser structure. Nature Communications, 4, doi:10.1038/ncomms3184

Journal Article Type Article
Acceptance Date Jun 25, 2013
Publication Date Jul 25, 2013
Deposit Date Apr 16, 2014
Publicly Available Date Apr 16, 2014
Journal Nature Communications
Electronic ISSN 2041-1723
Publisher Nature Publishing Group
Peer Reviewed Peer Reviewed
Volume 4
Article Number 2184
DOI https://doi.org/10.1038/ncomms3184
Public URL http://eprints.nottingham.ac.uk/id/eprint/2964
Publisher URL http://www.nature.com/ncomms/2013/130725/ncomms3184/full/ncomms3184.html
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0

Files

ncomms3184.pdf (445 Kb)
PDF

Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0





You might also like



Downloadable Citations