Sensitivity Scaling of Dual Frequency Comb Spectroscopy

Details Sensitivity Scaling of Dual Frequency Comb Spectroscopy Sensitivity Scaling of Dual Frequency Comb Spectroscopy

Jun 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010mss..confefd09c&link_type=abstract

"International Symposium On Molecular Spectroscopy, 65th Meeting, Held 21-25 June, 2010 at Ohio State University. http://molspec

Computer Science

Performance

Mini-Symposium: Precision/Frequency Combs

Scientific paper

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 spectral elements. When normalized by the square root of the observation time, this figure of merit is 106 to 107 Hz1/2 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 × 106 Hz1/2 in a spectral band around 1560 nm.

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