Stretcher-free high energy nonlinear amplification of femtosecond pulses in rod-type fibers.
We report on the study of direct amplification of femtosecond pulses in an 80 mum core diameter microstructured Yb-doped rod-type fiber amplifier in the nonlinear regime. The system includes a compact single grating compressor for the compensation of the small dispersion in the amplifier. With a 1250 line/mm (l/mm) grating-based compressor, pulses as short as 49 fs with 870 nJ pulse energy and 12 MW peak power are obtained. Alternatively, the use of a 1740 l/mm grating allows the production of higher quality pulses of 70 fs, 1.25 microJ pulse energy, and 16 MW peak power.
Zaouter
Y
Y
Centre Lasers Intenses et Applications, Université de Bordeaux 1, CNRS, CEA 351 cours de la Libération, 33405 Talence, France. zaouter@celia.u-bordeaux1.fr
Papadopoulos
D N
DN
Hanna
M
M
Boullet
J
J
Huang
L
L
Aguergaray
C
C
Druon
F
F
Mottay
E
E
Georges
P
P
Cormier
E
E