We have demonstrated suppression and elimination of self-pulsing in a watt-level, dual-clad, ytterbium-doped fiber laser. The addition of a long section of passive fiber in the laser cavity makes the gain recovery faster than the self-pulsation dynamics, allowing only stable cw lasing. This scheme provides a simple and practical method for eliminating self-pulsations in fiber lasers at all pumping levels.
© 2009 Optical Society of America
Fiber Optics and Optical Communications
Original Manuscript: November 26, 2008
Revised Manuscript: January 16, 2009
Manuscript Accepted: January 19, 2009
Published: March 11, 2009
W. Guan and J. R. Marciante, "Complete elimination of self-pulsations in dual-clad ytterbium-doped fiber lasers at all pumping levels," Opt. Lett. 34, 815-817 (2009)