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 and of pulse energy. These can be compressed to , 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.
© 2010 Optical Society of AmericaFull Article | PDF Article
B. Ortaç, M. Plötner, J. Limpert, and A. Tünnermann
Opt. Express 15(25) 16794-16799 (2007)
Andy Chong, William H. Renninger, and Frank W. Wise
J. Opt. Soc. Am. B 25(2) 140-148 (2008)
A. Cabasse, B. Ortaç, G. Martel, A. Hideur, and J. Limpert
Opt. Express 16(23) 19322-19329 (2008)