PULSED COHERENT FIBER ARRAY LASER AND ITS METHOD OF OPERATION

摘要

A pulsed coherent fiber array laser system that includes a beam generating sub-system (12) that provides a signal pulse beam (14) having pulses of the desired duration that is split into several fiber channels. Optical leakage between the pulses in each split beam is measured and locked to a reference beam (16) by a phase sensing circuit (38) and phase adjusters (28) so that the phase of each fiber pulsed beam is aligned with the phase of the reference beam. A pulse clipper (36) or filter is employed to remove the pulses in the fiber beams so that they do not saturate the phase sensing circuit. The beam generating sub-> system can employ any suitable combination of devices to generate the signal beam and the reference beam, including continuous wave master oscillators, amplitude modulators, frequency shifters, injection seed oscillators, Q-switched lasers, reference oscillators, frequency lockers, wavelength division multiplexers, time gated switches, etc.