Abstract

High-power operation of a single-mode, linearly polarized, broadband superfluorescent fiber source has been achieved by using a two-stage cladding-pumped fiber configuration comprising a low power, single-ended, ytterbium-doped superfluorescent fiber seed source and a high-power cladding-pumped, polarization-maintaining, large-mode-area, ytterbium-doped amplifier pumped by a high-power diode source at 976 nm. The source yielded a maximum linearly polarized output of 106 W with a slope efficiency of up to 67% with respect to the launched pump power and with a measured polarization extinction ratio of 13.5 dB. The wavelength spectrum of the superfluorescent source spanned the range continuously from ∼1035 to 1100 nm, and the bandwidth (FWHM) of the emission spectrum was 21 nm. The minimum seed power required for an output power over 100 W was only 10 mW, corresponding to an effective power gain in the amplifier stage of 40 dB. Single-spatial-mode operation with a beam propagation factor (M2)<1.1 was achieved by bending the amplifier fiber to a bend radius of ∼8 cm, without a significant reduction in output power.

© 2007 Optical Society of America

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2007 (1)

L. Pearson, J. S. P. Chan, P. Wang, J. K. Sahu, and W. A. Clarkson, Appl. Phys. B 87, 75 (2007).
[CrossRef]

2006 (1)

2003 (1)

J. Limpert, A. Liem, H. Zellmer, and A. TunnermannElectron. Lett. 39, 645 (2003).
[CrossRef]

1998 (1)

K. Oh, T. F. Morse, and A. Kilian, Meas. Sci. Technol. 9, 1409 (1998).

1997 (1)

1996 (1)

1995 (1)

D. C. Hall, W. K. Burns, and R. P. Moeller, J. Lightwave Technol. 13, 1452 (1995).
[CrossRef]

1993 (1)

K. Takada, T. Kitaqawa, M. Shimizu, and M. Horiguchi, Ecol. Lett. 29, 365 (1993).

Appl. Phys. B (1)

L. Pearson, J. S. P. Chan, P. Wang, J. K. Sahu, and W. A. Clarkson, Appl. Phys. B 87, 75 (2007).
[CrossRef]

Ecol. Lett. (1)

K. Takada, T. Kitaqawa, M. Shimizu, and M. Horiguchi, Ecol. Lett. 29, 365 (1993).

Electron. Lett. (1)

J. Limpert, A. Liem, H. Zellmer, and A. TunnermannElectron. Lett. 39, 645 (2003).
[CrossRef]

J. Lightwave Technol. (1)

D. C. Hall, W. K. Burns, and R. P. Moeller, J. Lightwave Technol. 13, 1452 (1995).
[CrossRef]

Meas. Sci. Technol. (1)

K. Oh, T. F. Morse, and A. Kilian, Meas. Sci. Technol. 9, 1409 (1998).

Opt. Lett. (3)

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