title: Interplay of nonlinearity and gain shaping in femtosecond fiber amplifiers.
abstract: A study of chirped-pulse amplification in the presence of large nonlinear phase shifts (as large as approximately 12pi) and finite gain bandwidth is presented. Numerical simulations that include the effect of nonlinearity, group-velocity dispersion, higher-order dispersion, and finite gain bandwidth predict the spectral signature of the interplay of nonlinearity with gain shaping. Experimental results obtained for up to approximately 0.4 microJ pulse energies from a Yb fiber amplifier agree with the numerical calculations.
authors.affiliation: Department of Applied Physics, Cornell University, Ithaca, New York 14853, USA. lpk24@cornell.edu
authors.forename: Lyuba
authors.initials: L
authors.lastname: Kuznetsova
authors.forename: Andy
authors.initials: A
authors.lastname: Chong
authors.forename: Frank W
authors.initials: FW
authors.lastname: Wise