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Optics Letters

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  • Vol. 24, Iss. 15 — Aug. 1, 1999
  • pp: 1074–1076

Nonlinearly limited saturable-absorber mode locking of an erbium fiber laser

M. Jiang, *G. Sucha, M.E. Fermann, J. Jimenez, D. Harter, M. Dagenais, S. Fox, and Y. Hu  »View Author Affiliations


Optics Letters, Vol. 24, Issue 15, pp. 1074-1076 (1999)
http://dx.doi.org/10.1364/OL.24.001074


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Abstract

We describe an erbium fiber laser that is passively mode locked by a novel, precision antireflection-coated semiconductor saturable-absorber mirror that incorporates an additional two-photon absorber. It is shown that passive mode locking evolves from a Q-switching instability. The results are achieved by use of saturable absorbers that provide a large (15%) nonlinear (saturable) loss. Exploiting two-photon absorption can substantially reduce the peak power of the Q-switched pulses, which results in improved reliability of the laser. Moreover, two-photon absorption can be used to produce an optimal stability range for saturable-absorber mode locking.

© 1999 Optical Society of America

OCIS Codes
(140.3500) Lasers and laser optics : Lasers, erbium
(140.3510) Lasers and laser optics : Lasers, fiber
(140.4050) Lasers and laser optics : Mode-locked lasers
(320.7090) Ultrafast optics : Ultrafast lasers
(320.7110) Ultrafast optics : Ultrafast nonlinear optics
(320.7160) Ultrafast optics : Ultrafast technology

Citation
M. Jiang, *G. Sucha, M.E. Fermann, J. Jimenez, D. Harter, M. Dagenais, S. Fox, and Y. Hu, "Nonlinearly limited saturable-absorber mode locking of an erbium fiber laser," Opt. Lett. 24, 1074-1076 (1999)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-24-15-1074


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References

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