Algorithm for complete and rapid retrieval of ultrashort pulseamplitude and phase from a sonogram

摘要

We describe an algorithm based on principal-component generalizednprojections that is capable of unambiguous retrieval of the amplitudenand phase of an ultrashort pulse from a measurement of its sonogram.nRunning on a personal computer, the algorithm can complete more than 50niterations per second which enables real-time display of an ultrashortnpulse intensity and phase profile. Retrieval is demonstrated for a rangenof pulses with commonly encountered phase errors including linear chirp,nself-phase modulation, and cubic spectral phase, and experimentalnresults illustrate good agreement between the retrieved pulsencharacteristics and independent spectral measurements