METHOD FOR COMPENSATING FOR THE NARROWING OF RADIATION SPECTRUM IN LASER REGENERATIVE AMPLIFIER AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2021 - IPC G02F1/11 

FIELD: laser technology.

SUBSTANCE: invention relates to the field of laser technology and focus on a method for compensating for the narrowing of the radiation spectrum in a laser regenerative amplifier. The regenerative amplifier contains an optical resonator, in which an active element and an acousto-optic element are installed. The method consists in the formation of a radio-frequency pulse signal, which is converted into an ultrasonic pulse signal, which propagates in the acousto-optic element. After establishing a stationary transmission mode in the acousto-optical element, a laser pulse is injected into the optical resonator. The moment of injection and the number of laser pulse passes through the optical resonator are so coordinated with the propagation of the ultrasonic pulse signal in the acousto-optic element that the stationary transmission mode of the acousto-optic element ends before the moment of ejection of the laser pulse from the optical resonator.

EFFECT: providing compensation for the narrowing of the spectrum of a laser pulse without a significant decrease in its energy, obtaining an amplified laser pulse with a wide spectrum and reducing the dispersion introduced by the acousto-optic element.

7 cl, 3 dwg