High-Q optomechanical GaAs nanomembranes
Mesoscale and Nanoscale Physics
2015-05-30 v2 Optics
Quantum Physics
Abstract
We present a simple fabrication method for the realization of suspended GaAs nanomembranes for cavity quantum optomechanics experiments. GaAs nanomembranes with an area of 1.36 mm by 1.91 mm and a thickness of 160 nm are obtained by using a two-step selective wet-etching technique. The frequency noise spectrum reveals several mechanical modes in the kilohertz regime with mechanical Q-factors up to 2,300,000 at room temperature. The measured mechanical mode profiles agree well with a taut rectangular drumhead model. Our results show that GaAs nanomembranes provide a promising path towards quantum optical control of massive nanomechanical systems.
Cite
@article{arxiv.1110.1618,
title = {High-Q optomechanical GaAs nanomembranes},
author = {Jin Liu and Koji Usami and Andreas Naesby and Tolga Bagci and Eugene S. Polzik and Peter Lodahl and Søren Stobbe},
journal= {arXiv preprint arXiv:1110.1618},
year = {2015}
}
Comments
3 pages, 3 figures