Abstract
We demonstrate a dual-comb spectrometer using stabilized frequency combs spanning 177 to (1360 to ) in the near infrared. Comb-tooth-resolved measurements of amplitude and phase generate over individually resolved spectral elements at point spacing and kilohertz-level resolution and accuracy. The signal-to-noise ratio is 100 to 3000 per comb tooth. Doppler-broadened phase and amplitude spectra of , , , and in a multipass cell agree with established spectral parameters, achieving high-resolution measurements with optical bandwidth generally associated with blackbody sources.
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