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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 35, Iss. 13 — Jul. 1, 2010
  • pp: 2233–2235

Management of the high-order mode content in large ( 40 μm ) core photonic bandgap Bragg fiber laser

D. A. Gaponov, S. Février, M. Devautour, P. Roy, M. E. Likhachev, S. S. Aleshkina, M. Y. Salganskii, M. V. Yashkov, and A. N. Guryanov  »View Author Affiliations


Optics Letters, Vol. 35, Issue 13, pp. 2233-2235 (2010)
http://dx.doi.org/10.1364/OL.35.002233


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Abstract

Very large-mode-area Yb 3 + -doped single-mode photonic bandgap (PBG) Bragg fiber oscillators are considered. The transverse hole-burning effect is numerically modeled, which helps properly design the PBG cladding and the Yb 3 + -doped region for the high-order mode content to be carefully controlled. A ratio of the Yb 3 + -doped region diameter to the overall core diameter of 40% allows for single-mode emission, even for small spool diameters of 15 cm . Such a fiber was manufactured and subsequently used as the core element of a cw oscillator. Very good beam quality parameter M 2 = 1.12 and slope efficiency of 80% were measured. Insensitivity to bending, exemplified by the absence of temporal drift of the beam, was demonstrated for curvature diameter as small as 15 cm .

© 2010 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: April 19, 2010
Revised Manuscript: June 5, 2010
Manuscript Accepted: June 6, 2010
Published: June 25, 2010

Citation
D. A. Gaponov, S. Février, M. Devautour, P. Roy, M. E. Likhachev, S. S. Aleshkina, M. Y. Salganskii, M. V. Yashkov, and A. N. Guryanov, "Management of the high-order mode content in large (40 μm) core photonic bandgap Bragg fiber laser," Opt. Lett. 35, 2233-2235 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-13-2233


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