High-temperature line strengths with He- and Ar-broadening coefficients of the P(20) line in the 1 $$\leftarrow$$ 0 band of carbon monoxide

Grégoire, Claire M.; Mathieu, Olivier; Petersen, Eric L.

doi:10.1007/s00340-023-08132-6

Appl. Phys. B

2023

DOI: 10.1007/s00340-023-08132-6

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High-temperature line strengths with He- and Ar-broadening coefficients of the P(20) line in the 1 $$\leftarrow$$ 0 band of carbon monoxide

Claire M. Grégoire,

Olivier Mathieu,

Eric L. Petersen

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Cited by 2 publications

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Experimental study on mid-infrared CO transition lines broadened by N2, He, and H2 at elevated temperatures

Liu,

He,

et al. 2025

Measurement

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Experimental study on mid-infrared CO transition lines broadened by N2, He, and H2 at elevated temperatures

Liu,

He,

et al. 2025

Measurement

View full text Add to dashboard Cite

A Rapidly Tunable Laser System for Measurements of NH2 at 597 nm Behind Reflected Shock Waves

Clees,

Barnes,

Rault

et al. 2024

Sensors

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Distributed feedback lasers, which feature rapid wavelength tunability, are not presently available in the yellow and orange spectral regions, impeding spectroscopic studies of short-lived species that absorb light in this range. To meet this need, a rapidly tunable laser system was constructed, characterized, and demonstrated for measurements of the NH2 radical at 597.4 nm. The system consisted of three main parts: (1) a distributed feedback diode laser operating at 1194.8 nm, (2) a fiber-coupled optical amplifier, and (3) a periodically poled lithium niobate (PPLN) waveguide for second-harmonic generation. A phase-matching optical frequency bandwidth of 118 GHz and a second-harmonic generation efficiency of 109%/W were determined for the PPLN waveguide, and the intensity and wavelength stability of the system were measured. The rapid-tuning capabilities of the laser system were characterized to explore its potential for use in scanned-direct absorption and wavelength modulation spectroscopy experiments. The feasibility of scanned-direct absorption up to a scan rate of 900 kHz and wavelength modulation spectroscopy at modulation frequencies up to 800 kHz were demonstrated. Finally, the system was deployed in a series of shock tube experiments in which the concentration of NH2 radicals was measured during the decomposition of NH3 behind reflected shock waves.

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High-temperature line strengths with He- and Ar-broadening coefficients of the P(20) line in the 1 $$\leftarrow$$ 0 band of carbon monoxide

Cited by 2 publications

References 52 publications

Experimental study on mid-infrared CO transition lines broadened by N2, He, and H2 at elevated temperatures

Experimental study on mid-infrared CO transition lines broadened by N2, He, and H2 at elevated temperatures

A Rapidly Tunable Laser System for Measurements of NH2 at 597 nm Behind Reflected Shock Waves

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