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Tunable eletro-optical modulators based on a split-ring resonator

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5 Author(s)
Shiozaki, R.F. ; Instituto de Física de São Carlos–USP, Caixa Postal 369, São Carlos, São Paulo 13560-970, Brazil ; Henn, E.A.L. ; Magalhaes, K.M.F. ; Amthor, T.
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Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.2430655 

We present a novel design of an electro-optical modulator setup, consisting of a mechanically tunable cavity which allows the modulation frequency to be varied over a broad range. The design is based on the frequently used geometry of a split-ring resonator which allows for high-efficiency sideband generation. Normally such a configuration has the limitation of a narrow excitation band width (∼20 MHz). Our adjustable setup offers broad-range tunability over several hundred megahertz while still keeping the modulation efficiency. Such a widely tunable modulator may find applications in a variety of experiments in atomic physics.

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Review of Scientific Instruments  (Volume:78 ,  Issue: 1 )