Coherent light generators – Particular beam control device – Having particular beam control circuit component
Reexamination Certificate
2006-06-06
2006-06-06
Rodriguez, Armando (Department: 2828)
Coherent light generators
Particular beam control device
Having particular beam control circuit component
C372S026000, C372S029010, C372S029011, C372S029023
Reexamination Certificate
active
07058098
ABSTRACT:
A coherent laser beam combining system wherein the output of a single master oscillator is split into a plurality of N signals, and the N signals are electronically modulated at unique frequencies. There is no reference signal and all of the signals are passed through phase adjusters. All N signals are optically amplified, aligned and passed through a beam splitter to split off a small sample that is imaged onto a photodetector. The photodetector output is fed to a signal processor that separates the N signals and produces N phase error signals that drive the N phase adjusters resulting in a high-powered optically coherent output signal.
REFERENCES:
R. R. Rice et, J. A. Davis, J. S. Whitely, J. H. Hollister, and N. F. Ruggieri, “Coherent Fiber MOPA,” 14th Annual Solid State and Diode Laser Technology Review, Albuquerque, NM, May, 2001.
J. Abderegg, S. J. Brosnan, M. E. Weber, H. Komine, and M. G. Wickham, “8-Watt Coherently-Phased 4-Element Fiber Array,” Proceedings of the SPIE vol. 4974, pp. 1-6, 2003.
S.J. Augst, T. Y.Fan, and Antonio Sanchez, “Coherent Beam Combining and Phase Noise Measurements of Yb fiber Amplifiers,” Optics Letters, vol. 29, No. 5, pp. 474-476, Mar. 1, 2004.
Callahan Kenneth E.
Rodriguez Armando
The United States of America as represented by the Secretary of
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