Laser beam wavefront and line-of-sight error correction system
Patent
·
OSTI ID:5111138
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 servocontrol 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.
- Assignee:
- Hughes Aircraft Co
- Patent Number(s):
- US 4326800
- OSTI ID:
- 5111138
- Country of Publication:
- United States
- Language:
- English
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