Telescopic control of high power laser propagation

摘要

The present invention provides a reflective telescopic system, to control the generation of filamentation of ultrashort and intense laser pulses that includes: a flat mirror, an adaptive reflective mirror, a dichroic convex mirror, an off-axis parabolic mirror, and a first laser source. The convex mirror and the adaptive reflective mirror are mounted on an independent breadboard and set on a translation stage. The propagation axis of the laser beam reflected by the mirror should correspond to the off-axis of the parabolic mirror. The parabolic mirror reflects the beam at a specific angle. Finally, the propagation axis between the dichroic convex mirror and the off-axis parabolic mirror, the propagation axis between the flat mirror and the adaptive reflective mirror, and the axis of the translation stage should be substantially parallel to each other. The present invention also contemplates the boresighting of a weak laser beam from a second laser source.

主权项

1. A reflective telescopic system for propagating a first laser beam from a first laser source, comprising:
a telescope having:
an off-axis parabolic mirror for reflecting the first laser beam;a dichroic convex mirror for reflecting the first laser beam to the parabolic mirror;an adaptive reflective mirror to reflect the first laser beam to the dichroic convex mirror; and
a first flat mirror, operatively positioned to reflect the first laser beam from the first laser source to the adaptive reflective mirror;a diverging lens for superposing a focus of a second laser beam from a second laser source with an effective focus of the telescopic system, the diverging lens being positioned such that the second laser beam passes through the diverging lens before passing through the dichroic mirror;wherein a first propagation axis of the first laser beam between the dichroic convex mirror and the off-axis parabolic mirror is substantially parallel with a second propagation axis between the first flat mirror and the adaptive reflective mirror.