Frequency control of photonic crystal membrane resonators by monolayer deposition

Strauf, S. et al. (2006) Frequency control of photonic crystal membrane resonators by monolayer deposition. Applied Physics Letters, 88(4), 043116. (doi: 10.1063/1.2164922)

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We study the response of GaAs photonic crystal membrane resonators to thin-film deposition. Slow spectral shifts of the cavity mode of several nanometers are observed at low temperatures, caused by cryo-gettering of background molecules. Heating the membrane resets the drift and shielding will prevent drift altogether. In order to explore the drift as a tool to detect surface layers, or to intentionally shift the cavity resonance frequency, we studied the effect of self-assembled monolayers of polypeptide molecules attached to the membranes. The 2-nm-thick monolayers lead to a discrete step in the resonance frequency and partially passivate the surface.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Badolato, Professor Antonio
Authors: Strauf, S., Rakher, M.T., Carmeli, I., Hennessy, K., Meier, C., Badolato, A., DeDood, M.J.A., Petroff, P.M., Hu, E.L., Gwinn, E.G., and Bouwmeester, D.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Applied Physics Letters
Publisher:AIP Publishing
ISSN (Online):1077-3118
Published Online:27 January 2006

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