corner
corner
APS » Journals » Phys. Rev. Lett. » Volume 102 » Issue 1
< Previous Article | Next Article >

Phys. Rev. Lett. 102, 015502 (2009) [4 pages]

Lifetime of THz Acoustic Nanocavity Modes

Download: PDF (322 kB) Buy this article Export: BibTeX or EndNote (RIS)

G. Rozas1, M. F. Pascual Winter1,2, B. Jusserand2, A. Fainstein1,*, B. Perrin2, E. Semenova3, and A. Lemaître3
1Centro Atómico Bariloche & Instituto Balseiro, CNEA, Bustillo 9500, R8402AGP S. C. de Bariloche, Río Negro, Argentina
2Institut des Nanosciences de Paris, Université Pierre et Marie Curie, CNRS UMR 7588, Campus Boucicaut, 140 Rue de Lourmel, 75015 Paris, France
3Laboratoire de Photonique et de Nanostructures, CNRS, Route de Nozay, 91460 Marcoussis, France

Received 7 August 2008; published 5 January 2009

We present an ultrahigh resolution Raman study of the lifetime of 1 THz acoustic phonons confined in nanocavities. We demonstrate that the cavity Q factor can be controlled by design. Anharmonicity contributes only marginally to limit the cavity phonon lifetime, even at room temperature, while thickness fluctuations in the scale of 1/10 of a unit cell are the main limitation for the performance of THz phonon cavities.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.102.015502
DOI:
10.1103/PhysRevLett.102.015502
PACS:
63.22.Np, 62.80.+f, 78.30.Fs

*afains@cab.cnea.gov.ar

 
< Previous Article | Next Article >