Applied Physics B

, Volume 70, Supplement 1, pp S41–S49

Suppression of Q-switched mode locking and break-up into multiple pulses by inverse saturable absorption

  • T.R. Schibli
  • E.R. Thoen
  • F.X. Kärtner
  • E.P. Ippen

DOI: 10.1007/s003400000331

Cite this article as:
Schibli, T., Thoen, E., Kärtner, F. et al. Appl Phys B (2000) 70: S41. doi:10.1007/s003400000331

Abstract.

Suppression of Q-switching during mode locking is extremely important for the successful development of continuous-wave mode-locked solid-state and fiber lasers. In this paper we show that the use of inverse saturable absorption, such as two-photon absorption and free carrier absorption, can suppress Q-switching instabilities and expand the continuous-wave operating regime in solid-state and fiber lasers. Conversely, an excess of inverse saturable absorption may lead to pulse-energy limiting and induce a break-up into multiple pulses. To analyze the advantages and limitations of adding this nonlinearity, we derive and discuss the mode-locking stability criteria in the presence of inverse saturable absorption. Useful asymptotic formulas for the absorber design employing inverse saturable absorption are also derived.

PACS: 42.60.-v; 42.65.-k

Copyright information

© Springer-Verlag 2000

Authors and Affiliations

  • T.R. Schibli
    • 1
  • E.R. Thoen
    • 2
  • F.X. Kärtner
    • 1
  • E.P. Ippen
    • 2
  1. 1.High-Frequency and Quantum Electronics Laboratory, Karlsruhe University, Kaiserstrasse 12, 76128 Karlsruhe, Germany (Fax: +49-721/608-2786, E-mail: F.Kaertner@etec.uni-karlsruhe.de)DE
  2. 2.Department of Electrical Engineering and Computer Science and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA (Fax: +1-617/253-9611, E-mail: ippen@mit.edu)US