Patent ID: 9698559
Date: 2017-07-04
CPC Classifications: G01B,G01N,G02B,H01S

Claim:
1. A laser based system for generating optical pulses with a time varying time delay, said system comprising: an optical source, said source comprising: at least one mode locked oscillator, said source generating optical pulses at a time-varying repetition rate, and an output pulse train comprising pulse pairs derived from said at least one mode locked oscillator propagating in a common optical path, said pulse pairs characterized by having a frequency comb spectrum comprising first and second individual frequency combs, wherein each of said individual frequency combs comprise frequency teeth separated in frequency; a repetition rate modulator configured to modulate said repetition rate at a modulation rate; and an optical element for selecting first and second narrow spectral lines from said first and second combs to monitor at least a carrier envelope offset and repetition rate evolution of said time varying repetition rate.