Electro optic frequency combs: getting visible results

Harald G. L. Schwefel; Nicholas J Lambert; Luke S Trainor

doi:10.1117/12.3011723

13 March 2024 Electro optic frequency combs: getting visible results

Harald G. L. Schwefel, Nicholas J Lambert, Luke S Trainor

Proceedings Volume PC12912, Quantum Sensing, Imaging, and Precision Metrology II; PC129122B (2024) https://doi.org/10.1117/12.3011723
Event: SPIE Quantum West, 2024, 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. Besides these results at telecom frequencies, we will also show first results of a visible electro-optic frequency comb.

Conference Presentation

Citation Download Citation

Harald G. L. Schwefel, Nicholas J Lambert, and Luke S Trainor "Electro optic frequency combs: getting visible results", Proc. SPIE PC12912, Quantum Sensing, Imaging, and Precision Metrology II, PC129122B (13 March 2024); https://doi.org/10.1117/12.3011723

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