Patent ID: 9057930
Filing Date: 2015-06-16
Classification: G02F

Abstract:
1. A method of optical parametric amplification, comprising: providing a pump pulse having a pump pulse duration, providing a chirped seed pulse having a seed pulse duration, and sequentially passing of the pump and seed pulses through at least two amplification stages, wherein the pump and seed pulses are coupled into the amplification stages with varying mutual temporal overlap and the seed pulse is amplified at each of the amplification stages wherein an amplified signal pulse is provided by the seed pulse after amplification in a last one of the amplification stages, wherein the seed pulse duration is longer than the pump pulse duration, and the mutual temporal overlap of the pump and seed pulses is varied such that different temporal ranges of the seed pulse are amplified at each of the amplification stages, and compared with the seed pulse, the signal pulse has an increased energy in the spectral regions determined by the temporal overlap of the seed pulse with the pump pulse.