High-energy femtosecond photonic crystal fiber laser.
We report the generation of high-energy high-peak power pulses in an all-normal dispersion fiber laser featuring large-mode-area photonic crystal fibers. The self-starting chirped-pulse fiber oscillator delivers 11 W of average power at 15.5 MHz repetition rate, resulting in 710 nJ of pulse energy. The output pulses are dechirped outside the cavity from 7 ps to nearly transform-limited duration of 300 fs, leading to pulse peak powers as high as 1.9 MW. Numerical simulations reveal that pulse shaping is dominated by the amplitude modulation and spectral filtering provided by a resonant semiconductor saturable absorber.
Lecaplain
Caroline
C
CNRS UMR 6614 CORIA, Université de Rouen, Avenue de l’Université, BP 12, 76801 Saint Etienne du Rouvray, France. lecaplain@coria.fr
Ortaç
Bülend
B
Machinet
Guillaume
G
Boullet
Johan
J
Baumgartl
Martin
M
Schreiber
Thomas
T
Cormier
Eric
E
Hideur
Ammar
A