Sub-80 fs dissipative soliton large-mode-area fiber laser.
We report on high-energy ultrashort pulse generation from an all-normal-dispersion large-mode-area fiber laser by exploiting an efficient combination of nonlinear polarization evolution (NPE) and a semiconductor-based saturable absorber mode-locking mechanism. The watt-level laser directly emits chirped pulses with a duration of 1 ps and 163 nJ of pulse energy. These can be compressed to 77 fs, generating megawatt-level peak power. Intracavity dynamics are discussed by numerical simulation, and the intracavity pulse evolution reveals that NPE plays a key role in pulse shaping.
Baumgartl
Martin
M
Friedrich-Schiller-University Jena, Institute of Applied Physics, Albert-Einstein-Strasse 15, 07745 Jena, Germany. martin.baumgartl@uni-jena.de
Ortaç
Bülend
B
Lecaplain
Caroline
C
Hideur
Ammar
A
Limpert
Jens
J
Tünnermann
Andreas
A