Abstract

For short-pulse energy extraction from a CO2 laser amplifier it is desirable to use multiline/double-band amplification. Multiline/double-band oscillation including up to nine lines was obtained simultaneously from the 9.6- and 10.6-μm bands by placing an etalon perpendicular to the optical axis of a CO2 laser and adjusting its thickness in the oscillator cavity. Improvement in energy extraction was corroborated in the region of saturation amplification using a 1-atm electron-beam-controlled amplifier.

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