Pulse growth dynamics in laser mode locking

Mark Popov, Omri Gat

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

We analyze theoretically and numerically the nonlinear process of pulse formation in mode-locked lasers, starting from a perturbation of a continuous wave. Focusing on weak-to-moderate dispersion systems, we show that pulse growth is initially slow, dominated by a cascade of energy from low to high axial modes, followed by fast strongly nonlinear growth, and finally relaxation to the stable pulse wave form. The pulse grows initially by condensing a fixed amount of energy into a decreasing time interval, with peak power growing toward a finite-time singularity that is checked when the gain bandwidth is saturated by the pulse.

Original languageAmerican English
Article number011801
JournalPhysical Review A
Volume97
Issue number1
DOIs
StatePublished - 5 Jan 2018

Bibliographical note

Funding Information:
Acknowledgments. Nathan Kutz participated in early stages of this work, and we thank him for his contribution. We thank the U.S.-Israel Binational Science Foundation for financial support under Grant No. 2010442.

Publisher Copyright:
© 2018 American Physical Society.

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