Abstract

We demonstrate stimulated Brillouin scattering (SBS) suppression in a Yb-doped fiber amplifier by seeding with a combination of broad- and single-frequency laser beams that are separated sufficiently to suppress four-wave mixing and to allow for efficient laser gain competition between the two signals. In the experiment, a monolithic fiber configuration was used. With appropriate selection of seed power ratio, we were able to generate single-frequency 1064nm light with a slope efficiency of 78% while simultaneously suppressing the backscattered Stokes light. We discuss scalability to high power wherein a large thermal gradient can be induced at the output end of the fiber via quantum defect heating, leading to an SBS suppression factor comparable to counterpumping.

© 2010 Optical Society of America

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References

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  1. Y. Jeong, J. Nilsson, J. K. Sahu, D. N. Payne, R. Horley, L. M. B. Hickey, and P. W. Turner, IEEE J. Sel. Top. Quantum Electron. 13, 546 (2007).
    [CrossRef]
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    [CrossRef] [PubMed]
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    [CrossRef]
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    [PubMed]
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    [CrossRef] [PubMed]
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    [CrossRef]

2009

2008

2007

Y. Jeong, J. Nilsson, J. K. Sahu, D. N. Payne, R. Horley, L. M. B. Hickey, and P. W. Turner, IEEE J. Sel. Top. Quantum Electron. 13, 546 (2007).
[CrossRef]

S. Gray, A. Liu, D. T. Walton, J. Wang, M. J. Li, X. Chen, A. B. Ruffin, J. A. DeMeritt, and L. A. Zenteno, Opt. Express 15, 17044 (2007).
[CrossRef] [PubMed]

Bronder, T. J.

Chen, X.

Dajani, I.

DeMeritt, J. A.

Gavrielides, A.

Gray, S.

Hickey, L. M. B.

Y. Jeong, J. Nilsson, J. K. Sahu, D. N. Payne, R. Horley, L. M. B. Hickey, and P. W. Turner, IEEE J. Sel. Top. Quantum Electron. 13, 546 (2007).
[CrossRef]

Horley, R.

Y. Jeong, J. Nilsson, J. K. Sahu, D. N. Payne, R. Horley, L. M. B. Hickey, and P. W. Turner, IEEE J. Sel. Top. Quantum Electron. 13, 546 (2007).
[CrossRef]

Jeong, Y.

Y. Jeong, J. Nilsson, J. K. Sahu, D. N. Payne, R. Horley, L. M. B. Hickey, and P. W. Turner, IEEE J. Sel. Top. Quantum Electron. 13, 546 (2007).
[CrossRef]

Li, M. J.

Liu, A.

Nilsson, J.

Y. Jeong, J. Nilsson, J. K. Sahu, D. N. Payne, R. Horley, L. M. B. Hickey, and P. W. Turner, IEEE J. Sel. Top. Quantum Electron. 13, 546 (2007).
[CrossRef]

Payne, D. N.

Y. Jeong, J. Nilsson, J. K. Sahu, D. N. Payne, R. Horley, L. M. B. Hickey, and P. W. Turner, IEEE J. Sel. Top. Quantum Electron. 13, 546 (2007).
[CrossRef]

Robin, C.

Robin, C. A.

Ruffin, A. B.

Sahu, J. K.

Y. Jeong, J. Nilsson, J. K. Sahu, D. N. Payne, R. Horley, L. M. B. Hickey, and P. W. Turner, IEEE J. Sel. Top. Quantum Electron. 13, 546 (2007).
[CrossRef]

Shay, T.

Shay, T. M.

I. Dajani, C. Zeringue, and T. M. Shay, IEEE J. Sel. Top. Quantum Electron. 15, 406 (2009).
[CrossRef]

Turner, P. W.

Y. Jeong, J. Nilsson, J. K. Sahu, D. N. Payne, R. Horley, L. M. B. Hickey, and P. W. Turner, IEEE J. Sel. Top. Quantum Electron. 13, 546 (2007).
[CrossRef]

Vergien, C.

Walton, D. T.

Wang, J.

Zenteno, L. A.

Zeringue, C.

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Figures (3)

Fig. 1
Fig. 1

Experimental setup of monolithic two-tone fiber amplifier system. The system of WDMs is used to combine or separate the signals.

Fig. 2
Fig. 2

(a) Backward power versus 1064 nm output signal. Departure from linearity indicates onset of SBS threshold. (b) Spectral content of backward light for two-tone configuration.

Fig. 3
Fig. 3

(a) Spatial evolution of the 1030 and 1080 nm signals. Power is normalized to output power from copumped single tone at SBS threshold. (b) Temperature profiles for different configurations. SBS process turned off for single-tone copump to allow for comparable pumping power.

Equations (1)

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N 2 > σ 1045 ( a ) σ 1045 ( a ) + σ 1045 ( e ) N 0 ,

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