Interplay of nonlinearity and gain shaping in femtosecond fiber amplifiers.
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.
Kuznetsova
Lyuba
L
Department of Applied Physics, Cornell University, Ithaca, New York 14853, USA. lpk24@cornell.edu
Chong
Andy
A
Wise
Frank W
FW