Magnetic field-induced excitation and optical detection of mechanical modes of microspheres

We propose a method to excite and detect the mechanical modes of dielectric microspheres. The mechanical modes are excited by simultaneously imposing static and harmonic magnetic fields on the spheres. They are monitored by simultaneously exciting and tracking the whispering gallery optical modes of...

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Bibliographic Details
Published in:Journal of applied physics 2010-06, Vol.107 (12), p.123115-123115-4
Main Authors: Ioppolo, T., Ötügen, M. V., Marcis, K.
Format: Article
Language:English
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Summary:We propose a method to excite and detect the mechanical modes of dielectric microspheres. The mechanical modes are excited by simultaneously imposing static and harmonic magnetic fields on the spheres. They are monitored by simultaneously exciting and tracking the whispering gallery optical modes of the spheres. An analysis is carried out to investigate the relationship between the applied magnetic field and the corresponding whispering gallery mode shifts. Experiments were carried out to demonstrate the proposed magnetic field-induced excitation and optical detection method.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.3452363