Abstract: A method of carrier envelope phase stabilization is disclosed which includes temporally stretching a oscillator output signal to produce at least one stretcher output signal, splitting the stretcher output signal to produce a forward bypass signal, amplifying the stretcher output signal to produce at least one amplifier output signal, compressing the amplifier output signal to produce at least one compressor output signal, compressing the forward bypass signal to form at least one fast loop signal, measuring the carrier envelope offset frequency (fce) and the carrier envelope noise (fnoise) of the fast loop signal, generating at least one correction signal based on at least one of the carrier envelope offset frequency (fce) the carrier envelope noise (fnoise), and adjusting the frequency characteristic of at least one of the oscillator signal and the stretcher output signal based on the correction signal.

Abstract: The present disclosure relates to a laser crystal device (1) for short pulse lasers, comprising a container (4), the interior of which is sealed relative to the environment and which contains a technically pure atmosphere with windows (12, 13) in the side walls (12, 13) for the passage of laser radiation (16), which in operation passes through a laser crystal (6), wherein the window (12, 13) has an inclination of the Brewster angle to the beam path of the laser radiation (16) and a mounting (5) for the laser crystal (6) is provided within the container (4), the windows (12, 13) are inclined to each other by double the Brewster angle and are placed at an adequate distance from the laser crystal (6) position, with relation to the laser beam properties, wherein the beam cross section at the windows (12, 13) is sufficiently large in order to guarantee a peak intensity at the windows (12, 13) which is sufficiently reduced in relation to the peak intensity of the laser beam (16) at the laser crystal (6) for avoidin

Abstract: The present disclosure relates to a laser crystal device (1) for short pulse lasers, comprising a container (4), the interior of which is sealed relative to the environment and which contains a technically pure atmosphere with windows (12, 13) in the side walls (12, 13) for the passage of laser radiation (16), which in operation passes through a laser crystal (6), wherein the window (12, 13) has an inclination of the Brewster angle to the beam path of the laser radiation (16) and a mounting (5) for the laser crystal (6) is provided within the container (4), the windows (12, 13) are inclined to each other by double the Brewster angle and are placed at an adequate distance from the laser crystal (6) position, with relation to the laser beam properties, wherein the beam cross section at the windows (12, 13) is sufficiently large in order to guarantee a peak intensity at the windows (12, 13) which is sufficiently reduced in relation to the peak intensity of the laser beam (16) at the laser crystal (6) for avoidin