DEVICE FOR AMPLIFYING A LASER PULSE HAVING IMPROVED TEMPORAL CONTRAST

摘要

Device for amplifying laser pulses with improved temporal contrast The present invention relates to a device for amplifying a multi-wavelength pulsed laser beam (2), which: -A solid amplifying medium 1 having two flat surfaces, a front face 12 and a reflective back face 11, and -A device for cooling the amplification medium (1) by the back side (11). The front face 12 of the amplifying medium 1 is inclined relative to the rear face 11 of the amplifying medium by a first non-zero slope, the device further comprises a trapezoidal prism 4, the trapezoidal prism having a second It has an input surface and an output surface forming a zero slope, and the first and second slopes are such that beams of respective wavelengths are parallel to each other at the output of the prism 4.