Efficient first-overtone CO laser as a potential source of IR radiation (y=2.5 to 4.2 um) for frequency-selective laser ablation

Andrei A. Ionin

doi:10.1117/12.376951

1 February 2000 Efficient first-overtone CO laser as a potential source of IR radiation (λ=2.5 to 4.2 μm) for frequency-selective laser ablation

Andrei A. Ionin

Author Affiliations +

Proceedings Volume 3885, High-Power Laser Ablation II; (2000) https://doi.org/10.1117/12.376951
Event: Advanced High-Power Lasers and Applications, 1999, Osaka, Japan

Abstract

An overview of theoretical and experimental results on first-overtone (FO) CO laser obtained for the period of approximately 20 years is presented. A special attention is paid to the quite new results jointly obtained at the Lebedev Physics Institute (Russia), TRINITI (Russia) and Air Force Research Lab (USA). Efficient multiwavelength pulsed FO CO lasing with output efficiency up to 11% and specific output energy up to 50 J/l Amagat is observed within the spectra range of 2.5 - 4.1 micrometers corresponding to the vibrational transitions V + 2 yields V from 6 yields 4 up to 37 yields 35. Single-line frequency tunable FO CO lasing on the wavelengths from approximately 2.7 up to 4.2 micrometers with the maximum output efficiency up to approximately 1% is also observed. Multiline and single-line lasing on 430 ro- vibrational lines is obtained. Theoretical calculations based on the experimental data predict that multiline FO CO laser efficiency can be enhanced up to 20%. FO CO laser with output efficiency and specific output energy comparable with those of CO₂ laser and spectral region of lasing covering that of HF and DF lasers can be considered as a potential source of high-power IR radiation for frequency selective laser ablation.

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Andrei A. Ionin "Efficient first-overtone CO laser as a potential source of IR radiation (λ=2.5 to 4.2 μm) for frequency-selective laser ablation", Proc. SPIE 3885, High-Power Laser Ablation II, (1 February 2000); https://doi.org/10.1117/12.376951

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KEYWORDS

Gas lasers

Mirrors

Laser resonators

Carbon monoxide

Diffraction gratings

Reflectivity

Energy efficiency

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