METHOD OF DETERMINING TURBULENT FLUCTUATIONS OF TRANSVERSE FLOW VELOCITY COMPONENT OF ACTIVE MIXTURE OF CO-LASER Russian patent published in 2006 - IPC G01N21/85 G01P3/36 

FIELD: investigating or analyzing materials.

SUBSTANCE: method comprises recording and processing the optical signal that carries information on the fluctuation of flow velocity of the active laser fluid of a CO₂-laser. The relative fluctuations of the inverse wave are recorded, and d(v²) is determined from the formula proposed. The inverse wave is generated by the internal resonance of four-wave mixing on the nonlinearity of the coefficient of the active fluid of the laser.

EFFECT: enhanced accuracy of the measurements.

2 dwg