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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
Published in:
Applied Physics Letters
(Volume:88
,
Issue:
4
)
Date of Publication: Jan 2006
- Page(s):
- 043116 - 043116-3
- ISSN :
- 0003-6951
- Digital Object Identifier :
- 10.1063/1.2164922
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 18 June 2009
- Issue Date :
- Jan 2006
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