Abstract

A Tm-doped large mode area (LMA) silica fiber laser has been locked to a stable wavelength of 2053.9nm using a volume Bragg grating (VBG). The measured spectral width of the laser output was <300pm, limited by the spectrometer resolution. Although this laser had modest output (5W) and slope efficiency (41%), this new approach to spectrally limiting the output of LMA fiber lasers is inherently extendable to kilowatt powers, opening up several applications including high-power pulsed fiber lasers and spectral beam combining. Performance characteristics of the laser compared to one using a dielectric mirror as a high reflector are described, and the results imply low VBG losses.

© 2008 Optical Society of America

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References

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[CrossRef]

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[CrossRef]

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[CrossRef]

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[CrossRef]

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[CrossRef]

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[CrossRef]

Electron. Lett.

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[CrossRef]

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[CrossRef]

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Other

V. Gapontsev, D. Gapontsev, N. Platonov, O. Shkurikhin, V. Fomin, A. Mashkin, M. Abramov, and S. Ferin, in Proceedings of CLEO/Europe 2005 (2005), p. 508.
[CrossRef]

C.-H. Liu, G. Chang, N. Litchinitser, D. Guertin, N. Jacobsen, K. Tankala, and A. Galvanauskas, in Proceedings of CLEO 2007 (2007), paper CTuBB3.

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Figures (3)

Fig. 1
Fig. 1

Schematic of the laser setup.

Fig. 2
Fig. 2

Output power versus absorbed pump power for HR and VBG lasers. Note that error bars denote 5% error associated with fluctuations in the power meter readout.

Fig. 3
Fig. 3

(a) HR and VBG laser output spectra at maximum absorbed pump power of approximately 23 W , (b) VBG laser spectrum at pump power of approximately 23 W .

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