Isotope ratio dual-comb spectrometer

@article{Parriaux2022IsotopeRD,
  title={Isotope ratio dual-comb spectrometer},
  author={Alexandre Parriaux and Kamal Hammani and Christophe Thomazo and Olivier Musset and Guy Millot},
  journal={Physical Review Research},
  year={2022}
}
We demonstrate the use of dual-comb spectroscopy for isotope ratio measurements. We show that the analysis spectral range of a free-running near-infrared dual-comb spectrometer can be extended to the mid-infrared by difference frequency generation to target specific spectral regions suitable for such measurements, and especially the relative isotopic ratio δC. The measurements performed present a very good repeatability over several days with a standard deviation below 2h for a recording time… 

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References

SHOWING 1-10 OF 50 REFERENCES

Depleted carbon isotope compositions observed at Gale crater, Mars

Carbon isotopic values of methane released during pyrolysis of 24 powder samples at Gale crater, Mars, show a high degree of variation, but no single explanation can be accepted without further research.

Kerr Frequency Comb Interaction with Raman, Brillouin, and Second Order Nonlinear Effects

Kerr optical frequency comb as a novel microcomb source has found a variety of key applications from fundamental research to engineering applications. Generation of such microcombs require resonator

Potassium isotope composition of Mars reveals a mechanism of planetary volatile retention

It is shown that meteorites from Mars have systematically heavier K isotopic compositions than the bulk silicate Earth, implying a greater loss of K from Mars than from Earth, and relationships indicate that planetary volatile abundances result from variable volatile loss during accretionary growth in which larger mass bodies preferentially retain volatile elements over lower mass objects.

Absolute 13C/12C isotope amount ratio for Vienna PeeDee Belemnite from infrared absorption spectroscopy

Measurements of isotope ratios are predominantly made with reference to standard specimens that have been characterized in the past. In the 1950s, the carbon isotope ratio was referenced to a

Long-wave mid-infrared time-resolved dual-comb spectroscopy of short-lived intermediates.

An electro-optic dual-comb spectrometer is demonstrated to perform transient absorption spectroscopy of the simplest Criegee intermediate (CH2OO), a short-lived species involved in many key atmospheric reactions, and its self-reaction product via comb-mode-resolved spectral sampling at microsecond temporal resolution.

Mid-infrared frequency combs at 10  GHz.

The high-repetition rate MIR frequency combs introduced here can be used for condensed phase spectroscopy and applications such as laser heterodyne radiometry.

Precision Spectroscopy of Nitrous Oxide Isotopocules with a Cross-Dispersed Spectrometer and Mid-Infrared Frequency Comb.

A cross-dispersed spectrometer, coupled with a mid-infrared frequency comb, capable of simultaneously monitoring all singly substituted, stable isotopic variants of N2O is presented.

Electro-optic frequency combs

Frequency combs are optical spectra composed of a set of discrete equally spaced lines. Such spectra can be generated by diverse sources such as mode-locked lasers, resonators, or electro-optic

Hollow waveguide integrated laser spectrometer for 13CO2/12CO2 analysis.

The laser analyzer described focuses on applications where samples contain a few percent of CO2, such as breath analysis and characterization of geo-carbon fluxes, where miniaturization facilitates deployment.