Theoretical analysis of a pulsed regime observed with a frequency-shifted-feedback fiber laser

Abstract

We study a spontaneous Q-switched laser regime obtained with a multiwavelength frequency-shifted-feedback erbium-doped fiber laser. We have developed a traveling wave model to describe the dynamics of this ring cavity laser. The numerical results are in good agreement with experimental measurements. Furthermore, the model gives insight into the origin of this pulsed emission. Unlike in most Q-switched lasers, Q-switched operation does not rely on amplitude modulation of the net cavity gain but is produced by modulation of the optical frequency spectrum. To our knowledge, this is the first demonstration of a fiber laser with frequency-modulated Q-switched operation.

© 2006 Optical Society of America

Multiwavelength picosecond frequency-shifted feedback laser with pulse control by a shaped-gain fiber amplifier

O. G. Okhotnikov
Opt. Lett. 23(18) 1459-1461 (1998)

Comparison of asymmetric and symmetric cavity configurations of erbium-doped fiber laser in active Q-switched regime

Stanislav A. Kolpakov, Yuri O. Barmenkov, Alexander V. Kir’yanov, Ana D. Guzmán-Chávez, Jose L. Cruz, and Miguel V. Andrés
J. Opt. Soc. Am. B 29(9) 2453-2461 (2012)

Experimental investigation on a Q-switched, mode-locked fiber laser based on the combination of active mode locking and passive Q switching

Junsu Lee, Joonhoi Koo, You Min Chang, Pulak Debnath, Yong-Won Song, and Ju Han Lee
J. Opt. Soc. Am. B 29(6) 1479-1485 (2012)

Theory of Q switching in actively mode-locked lasers

Joshua L. Proctor and J. Nathan Kutz
J. Opt. Soc. Am. B 23(4) 652-662 (2006)

Frequency shift in a fiber laser resonator

Radan Slavík and Sophie LaRochelle
Opt. Lett. 27(1) 28-30 (2002)