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Optics Letters

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  • Vol. 33, Iss. 9 — May. 1, 2008
  • pp: 989–991

High-power photonic-bandgap fiber laser

Sébastien Février, Dmitry D. Gaponov, Philippe Roy, Mikhail E. Likhachev, Sergei L. Semjonov, Mikhail M. Bubnov, Evgeny M. Dianov, Mikhail Yu. Yashkov, Vladimir F. Khopin, Mikhail Yu. Salganskii, and Aleksei N. Guryanov  »View Author Affiliations


Optics Letters, Vol. 33, Issue 9, pp. 989-991 (2008)
http://dx.doi.org/10.1364/OL.33.000989


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Abstract

An original architecture of an active fiber allowing a nearly diffraction-limited beam to be produced is demonstrated. The active medium is a double-clad large-mode-area photonic-bandgap fiber consisting of a 10,000 ppm by weight Yb 3 + -doped core surrounded by an alternation of high- and low-index layers constituting a cylindrical photonic crystal. The periodic cladding allows the robust propagation of a 200 μ m 2 fundamental mode and efficiently discriminates against the high-order modes. The M 2 parameter was measured to be 1.17. A high-power cw laser was built exhibiting 80% slope efficiency above threshold. The robust propagation allows the fiber to be tightly bent. Weak incidence on the slope efficiency was observed with wounding radii as small as 6 cm .

© 2008 Optical Society of America

OCIS Codes
(060.2270) Fiber optics and optical communications : Fiber characterization
(060.2280) Fiber optics and optical communications : Fiber design and fabrication

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: October 17, 2007
Revised Manuscript: March 6, 2008
Manuscript Accepted: March 12, 2008
Published: April 29, 2008

Citation
Sébastien Février, Dmitry D. Gaponov, Philippe Roy, Mikhail E. Likhachev, Sergei L. Semjonov, Mikhail M. Bubnov, Evgeny M. Dianov, Mikhail Yu. Yashkov, Vladimir F. Khopin, Mikhail Yu. Salganskii, and Aleksei N. Guryanov, "High-power photonic-bandgap fiber laser," Opt. Lett. 33, 989-991 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-9-989


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References

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