Patent ID: 7502395
Filing Date: 2009-03-10
Classification: G01J,H01S

Abstract:
1. A pulsed laser array system comprising: a beam generating sub-system for generating a reference beam and a pulsed signal beam that are frequency locked together, said beam generating sub-system providing optical leakage between the signal beam pulses for phase determination; a beam splitter for splitting the pulsed signal beam into a plurality of split pulsed signal beams for a plurality of fibers; a phase adjusting array including a plurality of phase adjusters, each phase adjuster receiving a split pulsed signal beam and a phase adjusting signal, each phase adjuster adjusting the phase of the split pulsed signal beam so that each split pulsed signal beam is in phase with the reference beam; an amplifier chain including at least one amplifier for amplifying each split pulsed signal beam; a beam coupler receiving the amplified split pulsed signal beams and the reference beam and coupling a portion of the amplified split pulsed signal beams with the reference beam; a detector array receiving the combined reference beam and the amplified split pulsed signal beams, and converting the combined reference beam and split pulsed amplified signal beams to an electrical signal; and a phase sensing circuit responsive to the electrical signal from the detector array, said phase sensing circuit measuring the difference in phase of the optical leakage between the pulses in the split pulsed signal beams and the reference beam, and providing the phase adjusting signal to the phase adjusters for adjusting the phase of the split pulsed signal beams to be in phase with the reference beam.