Piston error sensor for phased optical arrays

Details Piston error sensor for phased optical arrays Piston error sensor for phased optical arrays

1983-04-22

1994-11-08

Buczinski, Stephen C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

356349, G01J 120

Patent

active

053629566

ABSTRACT:
The piston error problem in a multi-laser optical system having a plurality of parallel component beams is solved by a control loop that responds to a path length difference signal generated by the interference of two of the component beams to adjust one of a set of adjustable component mirrors to reduce the path length difference.

REFERENCES:
patent: 3825845 (1974-07-01), Angelbeck et al.
patent: 4295741 (1981-10-01), Palma et al.
J. E. Pearson, Optical Engineering, vol. 15, No. 2, Mar.-Apr. 1976, p. 151.

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