Multiple laser beam combining and phasing using closed-loop control

Daniel R. Neal; Tony G. Smith; G. Richard Eisler; J. L. Wilcoxen; R. R. Rosenthal

doi:10.1117/12.152661

25 August 1993 Multiple laser beam combining and phasing using closed-loop control

Daniel R. Neal, Tony G. Smith, G. Richard Eisler, J. L. Wilcoxen, R. R. Rosenthal

Proceedings Volume 1920, Active and Adaptive Optical Components and Systems II; (1993) https://doi.org/10.1117/12.152661
Event: 1993 North American Conference on Smart Structures and Materials, 1993, Albuquerque, NM, United States

Abstract

One method for scaling lasers to higher power is to build several separate amplifier chains, and then coherently combine the individual beams together. To combine the beams the pathlengths must be matched to an integer number of waves, and the tip and tilt of each beam must be the same. Since optical tolerances are fractional micrometers, a sophisticated control system must be employed to actively measure tip/tilt and piston errors, and apply real time corrections. We have developed a test bed that allows us to develop the required control algorithms for two to four beams and then scale to a larger number.

Citation Download Citation

Daniel R. Neal, Tony G. Smith, G. Richard Eisler, J. L. Wilcoxen, and R. R. Rosenthal "Multiple laser beam combining and phasing using closed-loop control", Proc. SPIE 1920, Active and Adaptive Optical Components and Systems II, (25 August 1993); https://doi.org/10.1117/12.152661

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