Understanding photodetector nonlinearity in dual-comb interferometry
Optics
2021-06-16 v1 Instrumentation and Detectors
Abstract
The impact of photodetector nonlinearity on dual-comb spectrometers is described and compared to that of Michelson-based Fourier transform spectrometers (FTS). The optical sampling occurring in the dual-comb approach, being the key difference with FTS, causes optical aliasing of the nonlinear spectral artifacts. Measured linear and nonlinear interferograms are presented to validate the model. Absorption lines of HCN are provided to understand the impact of nonlinearity on spectroscopic measurements.
Cite
@article{arxiv.2106.08304,
title = {Understanding photodetector nonlinearity in dual-comb interferometry},
author = {Philippe Guay and Alex Tourigny-Plante and Vincent Michaud-Belleau and Nicolas Bourbeau Hébert and Ariane Gouin and Jérôme Genest},
journal= {arXiv preprint arXiv:2106.08304},
year = {2021}
}
Comments
5 pages, 8 figures