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Broadband Optical Serrodyne Frequency Shifting

We demonstrate serrodyne frequency shifting of light from 200 MHz to 1.2 GHz with an efficiency of better than 60 percent. The frequency shift is imparted by an electro-optic phase modulator driven by a high-frequency, high-fidelity sawtooth waveform that is passively generated by a commercially available Non-Linear Transmission Line (NLTL). We also implement a push-pull configuration using two serrodyne-driven phase modulators allowing for continuous tuning between -1.6 GHz and +1.6 GHz. Compared to competing technologies, this technique is simple and robust, and offers the largest available tuning range in this frequency band.

preprint2009arXivOpen access
D. M. S. JohnsonJ. M. HoganS. -w. ChiowM. A. Kasevich
physics.atom-phphysics.optics
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Open access4 authors2 topics
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D. M. S. JohnsonJ. M. HoganS. -w. ChiowM. A. Kasevich

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