OPTICAL SYSTEM FOR CORRECTING A DISTORTION OF ULTRASHORT LASER PULSE

摘要

The present invention relates to an optical system comprising: a first prism installed at the point where an ultrashort laser pulse enters; a second prism installed in a straight direction of the ultrashort laser pulses which have passed through the first prism; a third prism installed in a straight direction of the ultrashort laser pulses which have passed through the second prism; and a fourth prism installed in a straight direction of the ultrasonic laser pulses which have passed through the third prism. The optical system make a differnce between a first distance of the first prism and the second prism and a second distance of the third prism and the fourth prism, thereby compensating distortion of ultrashort pulse, which compensates for a special chirp. [Reference numerals] (AA) Decrease in the appropriation debt