Patent ID: 6850543
Filing Date: 2005-02-01
Classification: H01S

Abstract:
1. A method of stabilizing the phase of a carrier wave signal with respect to an envelope of the pulses emitted by a mode-locked pulsed laser comprising: obtaining an optical output from said pulsed laser that has a bandwidth that spans at least one octave; separating a first frequency output from said optical output having a first frequency; separating a second frequency output from said optical output, said second frequency output having a second frequency that is twice the frequency of said first frequency; doubling said-first frequency output of said pulsed laser to produce a frequency doubled first output; shifting said second frequency output by a predetermined amount to produce a second frequency shifted output; combining said frequency doubled first output and said second frequency shifted output to obtain a beat frequency signal; detecting said beat frequency signal; generating said beat frequency signal to phase coherently stabilize said phase of said carrier wave signal relative to said envelope of said pulsed laser.