High-precision short-distance dual-comb ranging system without carrier-envelope-offset locking
Year: 2024
Type: article
Abstract: In this paper, we propose a high-precision dual-comb ranging (DCR) method for short-distance measurement, avoiding carrier-envelope-offset locking. Cross-polarization detection is introduced, which makes better use of the intrinsic coherence of interferogram pairs over a short distance. We analyze the noise in the DCR system and propose a carrier-wave phase difference (CPD) calculation algorithm based on centroid extraction. The standard deviation of CPD is eight times less than that of the method we had proposed in a previous work, and the dynamic distance resolution is less than 10 nm at a distance of 10 µm. Besides, we compare the DCR result with the He-Ne laser interferometer from 0 to 4.8 mm, and the residual is found to be less than ±40 nm.
Source: Optics Express
DOI: 10.1364/oe.535020
Authors: Yuetang Yang, Shan Qian, Siyu Zhou, Guanhao Wu
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,270
OpenAlex ID: W4402026487