An ultrafast thulium-doped fiber laser with stretched-pulse operation has been realized and investigated. The passively mode-locked oscillator emitted 119 fs pulses at a peak wavelength of 1912 nm. A normal-dispersion fiber with a high numerical aperture and small core was used for intracavity dispersion management and external compression. Numerical simulations were performed and are in good agreement with the experimental results.
© 2012 Optical Society of America
Original Manuscript: March 15, 2012
Revised Manuscript: May 4, 2012
Manuscript Accepted: May 4, 2012
Published: June 19, 2012
Andreas Wienke, Frithjof Haxsen, Dieter Wandt, Uwe Morgner, Jörg Neumann, and Dietmar Kracht, "Ultrafast, stretched-pulse thulium-doped fiber laser with a fiber-based dispersion management," Opt. Lett. 37, 2466-2468 (2012)