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9 March 2023 Whispering gallery mode electro-optic dual frequency comb
Nicholas J. Lambert, Luke S. Trainor, Harald G. L. Schwefel
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Proceedings Volume PC12447, Quantum Sensing, Imaging, and Precision Metrology; PC1244725 (2023) https://doi.org/10.1117/12.2657346
Event: SPIE Quantum West, 2023, San Francisco, California, United States
Abstract
Whispering gallery mode resonators made from non-linear electro-optic materials are excellent platforms for frequency manipulation of electromagnetic radiation, allowing microwave up-conversion and the generation of frequency combs. By using an x-cut lithium niobate crystal to fabricate our WGM resonator, the resulting electro-optic coefficient varies around the circumference of the resonator, allowing for a simpler microwave geometry. We demonstrate a frequency comb with excellent repetition rate stability, and show results from dual combs with orthogonal polarisations. We measure the relative frequency stability of the dual combs, and find it to be 4 mHz, without any need for stabilisation or post processing.
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Nicholas J. Lambert, Luke S. Trainor, and Harald G. L. Schwefel "Whispering gallery mode electro-optic dual frequency comb", Proc. SPIE PC12447, Quantum Sensing, Imaging, and Precision Metrology, PC1244725 (9 March 2023); https://doi.org/10.1117/12.2657346
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KEYWORDS
Electro optics
Frequency combs
Resonators
Microwave radiation
Crystals
Electromagnetic radiation
Lithium niobate
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