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Dual-comb interferometry via repetition-rate switching of a single frequency comb



David R. Carlson, Daniel D. Hickstein, Daniel C. Cole, Scott A. Diddams, Scott B. Papp


We experimentally demonstrate a versatile technique for performing dual-comb interferometry using a single frequency comb. By rapid switching of the repetition rate, the output pulse train can be delayed and heterodyned with itself to produce interferograms. The full speed and resolution of standard dual-comb interferometry is preserved while simultaneously offering a significant experimental simplification and cost savings. We show that this approach is particularly suited for absolute distance metrology due to an extension of the non-ambiguity range as a result of the continuous repetition-rate switching.
Optics Letters


Dual-comb spectroscopy, frequency comb, laser range finder, spectroscopy, ultrafast measurements


Carlson, D. , Hickstein, D. , Cole, D. , Diddams, S. and Papp, S. (2018), Dual-comb interferometry via repetition-rate switching of a single frequency comb, Optics Letters, [online], (Accessed May 21, 2024)


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Created July 24, 2018, Updated February 1, 2019