DEVICE AND METHOD FOR GENERATING HIGH-POWER PULSES USING CO LASER Russian patent published in 2015 - IPC H01S3/104 H01S3/08 H01S3/134 

FIELD: physics, optics.

SUBSTANCE: invention relates to laser physics and generation of high-power pulses of a CO₂ laser. The invention enables to generate short, high-energy pulses, having minimal angular divergence, which enables to obtain high-intensity CO₂ laser beams, particularly intended for producing a laser-plasma ion source. The device consists of a single-mode driving generator operating on a CO₂ 10 mcm band line P(20) , an optical matching system and a three-path CO₂-amplifier formed by the wide-aperture active medium of a CO₂ laser and a resonant-absorption cell SF₆+N₂ (air) at atmospheric pressure, which are arranged in series inside or on the axis of a confocal telescope, which includes a large concave or a small convex mirror. The invention is based on repeated passage a pulse of the driving generator successively through the resonant-amplification and resonant-absorption medium, which increases the rising slope of the initial pulse and leads to compression of the pulse on duration during nonlinear amplification, thereby effectively increasing the power thereof.

EFFECT: three-time passage of resonant media of the absorber and amplifier in an axially symmetric shape enables to repeatedly use the described method and also enables to use spatial effects of increasing the light field in corresponding points of the media through interference, which improves efficiency of pulse compression in the amplifier.

3 cl, 1 dwg