Simple approach for extending the ambiguity-free-range of dual-comb ranging

Abstract

Dual-comb (DC) ranging is an established method for high-precision and high-accuracy distance measurements. It is, however, restricted by an inherent length ambiguity and the requirement for complex control loops for comb stabilization. Here, we present a simple approach for expanding the ambiguity-free measurement length of dual-comb ranging by exploiting the intrinsic intensity modulation of a single-cavity dualcolor DC for simultaneous time-of-flight a nd D C distance measurements. This measurement approach enables the measurement of distances up to several hundred km with the precision and accuracy of a dualcomb interferometric setup while providing a high data acquisition rate (~2 kHz) and requiring only the repetition rate of one of the combs to be stabilized.

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• 20 years of developments in optical frequency comb technology and applications
• Flexible all-PM NALM Yb:fiber laser design for frequency comb applications: operation regimes and their noise properties
• High-power frequency comb source tunable from 2.7 to 4.2 μm based on difference frequency generation pumped by an Yb-doped fiber laser
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Cited by in corpus (1)

• Performance and limitations of dual-comb based ranging systems