DEVICE FOR AMPLIFYING A LASER PULSE HAVING IMPROVED TEMPORAL CONTRAST

摘要

A device for amplifying a multi-wavelength pulsed laser beam is provided, which comprises: a solid amplifying medium with two planer faces, a front face and a reflecting rear face; and a device for cooling the amplifying medium by the rear face. The front face of the amplifying medium is tilted relative to its rear face by a first non-zero tilt and the device further comprises a trapezoidal prism, with an input face and an output face which form between them a second non-zero tilt, the first and second tilts being such that the beams of each wavelength are parallel to one another at the output of the prism.

主权项

1. A device for amplifying a multi-wavelength pulsed laser beam, comprising:
a solid amplifying medium of refractive index n1, with two planar faces, a front face intended to receive the so-called incident beam to be amplified and a reflecting rear face, the front face being tilted relative to its rear face by a first non-zero tilt, a device for cooling the amplifying medium by the rear face, characterized in that it further comprises a trapezoidal prism of refractive index n2, with an input face and an output face which form between them a second non-zero tilt, this prism being situated in a location intended to be on the path of the beam reflected by the rear face and refracted by the front face of the amplifying medium, and the first and second tilts being such that the beams of each wavelength are parallel to one another at the output of the prism.