Simple largely tunable optical microcavity

The authors demonstrate more than 9 nm tunability of the whispering gallery modes (WGMs) of rhodamine B doped water microdroplets resting on a superhydrophobic surface. Tunability was achieved by controlling the size of the microdroplets in a current controlled mini humidity chamber. WGMs were obser...

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Bibliographic Details
Published in:Applied physics letters 2006-08, Vol.89 (8), p.081118-081118-3
Main Authors: Kiraz, A., Kurt, A., Dündar, M. A., Demirel, A. L.
Format: Article
Language:English
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Summary:The authors demonstrate more than 9 nm tunability of the whispering gallery modes (WGMs) of rhodamine B doped water microdroplets resting on a superhydrophobic surface. Tunability was achieved by controlling the size of the microdroplets in a current controlled mini humidity chamber. WGMs were observed with quality factors of more than 8000 when kept stable. The sensitivity of the resonances to the size and shape of the microdroplet reveals opportunities for the use of this technique as a probe to characterize superhydrophobic surfaces and investigate liquid-solid surfaces.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2335371