Laser pulse generating device - produces pulses of duration 60-400 picoseconds having a determined form

摘要

The laser pulsing device, has means which divide into two a laser pulse, means of delaying, one of the two pulses obtained, with respect to the other and means of regulating the relative amplitude of the two pulses obtained. It has an element (2) which turns the polarisation plane (YO2) of a luminous beam crossing it, two polarisers (3, 4) being aligned with the element (2) whose polarisation planes are arranged parallel, a first mirror (5) is situated on the perpendicular to the line to the right of the first polariser (3) and inclined at 45 deg. with respect to the line, a second mirror (6) is also inclined at 45 deg. but in opposite sense, to the right of the second polariser (4) and at the same level as the first mirror (5).