CORRECTION OF ANGULAR DEVIATION AND RADIAL DRIFT OF LASER BEAMS

摘要

A laser correction element for the correction of angular deviation due to pointing instability and radial displacement due to thermal drift, including one or more of an angualr deviation non-symmetric optical element for redirecting a beam axis of a laser beam through a first corrective angle dependent upon the angle of incidence of the laser beam on the angular deviation element to be parallel with an optimum centerline and a radial displacement non-symmetric optical element for redirecting a beam of a laser beam through a second corrective angle dependent upon a radial displacement of the beam axis. A collimating non-symmetric optical element may redirect the laser beam through a third corrective angle dependent on raidal displacement of the beam axis from a centerline and angle of incidence on the collimating element.