1 October 1991 High-power pulsed and repetitively pulsed electron-beam-controlled discharge CO laser systems
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Abstract
High-power electron-beam controlled discharge (EBCD) carbon monoxide lasers and pulsed master oscillator-laser amplifier systems have been experimentally investigated at the Gas Laser Laboratory of Lebedev Institute. Requirements were formulated for an effective amplification in active medium and transportation through an atmosphere of multiwavelength CO-laser pulses with different spectral and temporal parameters. A dependence was found of spectral properties of multiwavelength signal at the laser amplifier output on the radiation energy density at the input. The supersonic EBCD CO laser operating at transient conditions of excitation with peak power of approximately 105 W and the repetitively pulsed subsonic EBCD CO laser acting with pumping pulse repetition rate of up to 120 Hz were created. Laser mixtures with density 0.4 and 1.1 Amagat were used in the subsonic laser. It was shown that CO-laser emission characteristics did not deteriorate up to fo/f on the order of magnitude of 1.2 (N equals 0.4 Amagat) and fo/f on the order of magnitude of 3 (N equals 1.1 Amagat), where fo equals V/q is the limit repetition rate (V equals gas flow velocity, 1 equals electrode dimension along the gas flow). The average power in subsonic gas-flow CO laser with active volume 5.1 was 10 kW.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Andrei A. Ionin, Andrei A. Ionin, "High-power pulsed and repetitively pulsed electron-beam-controlled discharge CO laser systems", Proc. SPIE 1502, Industrial and Scientific Uses of High-Power Lasers, (1 October 1991); doi: 10.1117/12.46909; https://doi.org/10.1117/12.46909
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