OPTICAL SYSTEM FOR LASER COMPRESSOR Russian patent published in 2015 - IPC H01S3/10 

FIELD: physics, optics.

SUBSTANCE: invention relates to laser engineering. The optical system for a laser compressor for laser apparatus with a wide aperture of the laser beam is based on a pair of parallel diffraction gratings with the same period supplemented with at least one pair of parallel diffraction gratings with the same period. Along the optical axis in the direction of propagation of laser radiation, the pairs of parallel diffraction gratings are arranged such that laser radiation first successively passes through the first gratings of all pairs of diffraction gratings, starting with the first pair of gratings, and then successively second gratings of all pairs of diffraction gratings, starting with the last pair of gratings, wherein different pairs of diffraction gratings are oriented relative to each other at different angles, selected as a function of the maximum dimension, optical characteristics of the diffraction gratings used and parameters of the laser radiation.

EFFECT: providing the required group dispersion of the given wide-aperture beam of optical radiation.

2 cl, 1 dwg