Improved convective flow longitudinal discharge CO laser

Pulsed and cw discharges in low-temperature flowing mixtures of CO and He, typical of those required for efficient laser action at 5 μm, are stabilized by convective flow injection of a weakly ionized plasma maintained by an auxiliary discharge adjacent to the main discharge volume. Pulsed input energy densities range from 0.5 kJ/l atm at 300 K to 0.2 kJ/l atm at 80 K for pressures on the order of 50 Torr and discharge pulse lengths of approximately 1 μs. Continuous discharge operation has been demonstrated with specific input powers of 300 W/(g/s) at pressures and temperatures of 40 Torr and 110 K.

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Effect of gas-flow velocity and discharge current on output power in DC axially discharged fast-axial-flow CO laser

Kodama

Sato²

1997

IEEE J. Quantum Electron.

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Improved convective flow longitudinal discharge CO laser

Abstract: Specific extraction efficiencies of 300 W g−1 sec−1 have been obtained with flow-stabilized electrodes in a longitudinal electric discharge CO laser, representing a 50% enhancement over previous results.

Cited by 3 publications

References 5 publications

Simplified aerodynamically stabilized cathode for longitudinal discharge lasers

Simplified aerodynamically stabilized cathode for longitudinal discharge lasers

Plasma-injection-stabilized discharges in CO and He at low temperatures

Effect of gas-flow velocity and discharge current on output power in DC axially discharged fast-axial-flow CO laser

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