Sensitivity scaling of dual frequency comb spectroscopy
Ian R. Coddington, William C. Swann, Nathan R. Newbury
Coherent dual comb spectroscopy can harness many inherent strengths of frequency combs to provide high-resolution, high-accuracy measurements of a sample response (in both magnitude and phase) on a single detector. We will discuss the noise scaling properties of this technique and show that a useful figure of merit is the product of the signal-to-noise ratio and the number of spectra elements. When normalized by the square root of the observation time, this figure of merit is 10^6 to 10^7 Hz ^1/2 for a single detector and fiber-laser based system. We will discuss the scaling laws, performance, and corresponding strengths and weaknesses of coherent dual comb spectroscopy in the context of our recent results that achieved a figure of merit of 2 x 10^6 Hz^1/2 in a spectral band around 1560 nm.
, Swann, W.
and Newbury, N.
Sensitivity scaling of dual frequency comb spectroscopy, International Symposium on Molecular Spectroscopy , Columbus, OH, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=905098
(Accessed December 9, 2023)