Laser beam wavefront and line-of-sight error correction system

Details Laser beam wavefront and line-of-sight error correction system Laser beam wavefront and line-of-sight error correction system

1980-05-05

1982-04-27

Buczinski, S. C.

Optics: measuring and testing

Angle measuring or angular axial alignment

With photodetection remote from measured angle

250201, 356153, 356363, G01B 1126

Patent

active

043268005

ABSTRACT:
An auto-alignment system for high energy lasers wherein a low energy reference beam is provided at the vertex of a primary mirror that is grated to diffract a low energy holographic replica of the high energy beam. A photodetector based servo-control system compares the line-of-sight of the reference beam to that of the low energy replica and generates control signals which actuate a beam steering mirror to reposition the main beam. The servo-control system also includes a wavefront sensor. This sensor analyzes the wavefront profile of the low energy replica and generates control signals which actuate a deformable mirror to correct spurious wavefront aberrations.

REFERENCES:
patent: 3902036 (1975-08-01), Zaleckas
patent: 4016415 (1977-04-01), O'Meara
patent: 4102572 (1978-07-01), O'Meara
patent: 4140398 (1979-02-01), Hodder
patent: 4146329 (1979-03-01), King et al.
patent: 4168908 (1979-09-01), Cubalchini

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