Triple-clad optical fibre for pulse stretching

This paper presents triple-clad stretcher fibre designs in which second-, third-, and fourth-order dispersion is matched to that of a grating-pair compressor in the Treacy configuration. The use of fibre having one of the proposed designs in a chirped pulse amplifier has made it possible to produce an all-fibre very large pulse stretching system that allows one to ensure the best possible quality of stretched pulse compression to a femtosecond duration.