The output of high power fiber amplifiers is typically limited by stimulated Brillouin scattering (SBS). An analysis of SBS with a chirped pump laser indicates that a chirp of 2.5 × 10¹⁵ Hz/s could raise, by an order of magnitude, the SBS threshold of a 20-m fiber. A diode laser with a constant output power and a linear chirp of 5 × 10¹⁵ Hz/s has been previously demonstrated. In a low-power proof-of-concept experiment, the threshold for SBS in a 6-km fiber is increased by a factor of 100 with a chirp of 5 × 10¹⁴ Hz/s. A linear chirp will enable straightforward coherent combination of multiple fiber amplifiers, with electronic compensation of path length differences on the order of 0.2 m.

© 2012 OSA

1. D. Taverner, D. J. Richardson, L. Dong, J. E. Caplen, K. Williams, and R. V. Penty, “158-µJ pulses from a single-transverse-mode, large-mode-area erbium-doped fiber amplifier,” Opt. Lett.22(6), 378–380 (1997). [CrossRef] [PubMed]
2. L. Yingfan, L. Zhiwei, D. Yongkang, and L. Qiang, “Research on stimulated Brillouin scattering suppression based on multi-frequency phase modulation n,” Chin. Opt. Lett.7, 29–31 (2009). [CrossRef]
3. D. Brown, M. Dennis, and W. Torruellas, “Improved phase modulation for SBS mitigation in kW-class fiber amplifiers,” SPIE Photonics West, San Francisco, CA, 24 Jan. 2011.
4. J. Edgecumbe, T. Ehrenreich, C.-H. Wang, K. Farley, J. Galipeau, R. Leveille, D. Björk, I. Majid, and K. Tankala, “kW class, narrow-linewidth, counter pumped fiber amplifiers,” Solid State and Diode Laser Technical Review, 17 June 2010.
5. I. Dajani, C. Zeringue, C. Lu, C. Vergien, L. Henry, and C. Robin, “Stimulated Brillouin scattering suppression through laser gain competition: scalability to high power,” Opt. Lett.35(18), 3114–3116 (2010). [CrossRef] [PubMed]
6. Model YLS-10000-SM, IPG Photonics
7. K. Shiraki, M. Ohashi, and M. Tateda, “Suppression of stimulated Brillouin scattering in a fibre by changing the core radius,” Electron. Lett.31(8), 668–669 (1995). [CrossRef]
8. C. Robin, I. Dajani, and F. Chiragh, “Experimental studies of segmented acoustically tailored photonic crystal fiber amplifier with 494 W single-frequency output,” Proc. SPIE7914, 79140B, 79140B-8 (2011). [CrossRef]
9. C. G. Carlson, R. B. Ross, J. M. Schafer, J. B. Spring, and B. G. Ward, “Full vectorial analysis of Brillouin gain in random acoustically microstructured photonic crystal fibers,” Phys. Rev. B83(23), 235110 (2011). [CrossRef]
10. S. Gray, D. T. Walton, X. Chen, J. Wang, M.-J. Li, A. Liu, A. B. Ruffin, J. A. Demeritt, and L. A. Zenteno, “Optical fibers with tailored acoustic speed profiles for suppressing stimulated Brillouin scattering in high-power, single-frequency sources,” IEEE J. Sel. Top. Quantum Electron.15(1), 37–46 (2009). [CrossRef]
11. G. D. Goodno, S. J. McNaught, J. E. Rothenberg, T. S. McComb, P. A. Thielen, M. G. Wickham, and M. E. Weber, “Active phase and polarization locking of a 1.4 kW fiber amplifier,” Opt. Lett.35(10), 1542–1544 (2010). [CrossRef] [PubMed]
12. DARPA ADHELS contract No. HR0011-060C-0029, final report (2008).
13. W. Liang, N. Satyan, A. Yariv, A. Kewitsch, G. Rakuljic, F. Aflatouni, H. Hashemi, and J. Ungar, “Coherent power combination of two master-oscillator-power-amplifier (MOPA) semiconductor lasers using optical phase lock loops,” Opt. Express15(6), 3201–3205 (2007). [CrossRef] [PubMed]
14. W. Liang, N. Satyan, A. Yariv, A. Kewitsch, and G. Rakuljic, “Tiled-aperture coherent beam combining using optical phase-lock loops,” Electron. Lett.44(14), 875–876 (2008). [CrossRef]
15. N. Satyan, W. Liang, F. Aflatouni, A. Yariv, A. Kewitsch, G. Rakuljic, and H. Hashemi, “Phase-controlled apertures using heterodyne optical phase-locked loops,” IEEE Photon. Technol. Lett.20(11), 897–899 (2008). [CrossRef]
16. N. Satyan, W. Liang, A. Kewitsch, G. Rakuljic, and A. Yariv, “Coherent power combination of semiconductor lasers using optical phase-lock loops,” IEEE J. Sel. Top. Quantum Electron.15(2), 240–247 (2009). [CrossRef]
17. N. Satyan, A. Vasilyev, G. Rakuljic, V. Leyva, and A. Yariv, “Precise control of broadband frequency chirps using optoelectronic feedback,” Opt. Express17(18), 15991–15999 (2009). [CrossRef] [PubMed]
18. V. Lanticq, S. Jiang, R. Gabet, Y. Jaouën, F. Taillade, G. Moreau, and G. P. Agrawal, “Self-referenced and single-ended method to measure Brillouin gain in monomode optical fibers,” Opt. Lett.34(7), 1018–1020 (2009). [CrossRef] [PubMed]
19. O. Terra, G. Grosche, and H. Schnatz, “Brillouin amplification in phase coherent transfer of optical frequencies over 480 km fiber,” Opt. Express18(15), 16102–16111 (2010). [CrossRef] [PubMed]
20. N. Satyan, G. Rakuljic, and A. Yariv, “Chirp multiplication by four wave mixing for wideband swept-frequency sources for high resolution imaging,” J. Lightwave Technol.28(14), 2077–2083 (2010). [CrossRef]
21. J. B. Coles, B. P.-P. Kuo, N. Alic, S. Moro, C.-S. Bres, J. M. C. Boggio, P. A. Andrekson, M. Karlsson, and S. Radic, “Bandwidth-efficient phase modulation techniques for stimulated Brillouin scattering suppression in fiber optic parametric amplifiers,” Opt. Express18(17), 18138–18150 (2010). [CrossRef] [PubMed]
22. S. J. Augst, T. Y. Fan, and A. Sanchez, “Coherent beam combining and phase noise measurements of ytterbium fiber amplifiers,” Opt. Lett.29(5), 474–476 (2004). [CrossRef] [PubMed]
23. N. Satyan, A. Vasilyev, G. Rakuljic, J.O. White, and A. Yariv, manuscript submitted for publication.
24. D. Brown, M. Dennis, and W. Torruellas, “Improved phase modulation for SBS mitigation in kW-class fiber amplifiers,” Photonics West, 24 Jan. 2011.

Chin. Opt. Lett.

• L. Yingfan, L. Zhiwei, D. Yongkang, and L. Qiang, “Research on stimulated Brillouin scattering suppression based on multi-frequency phase modulation n,” Chin. Opt. Lett.7, 29–31 (2009). [CrossRef]

Electron. Lett.

• K. Shiraki, M. Ohashi, and M. Tateda, “Suppression of stimulated Brillouin scattering in a fibre by changing the core radius,” Electron. Lett.31(8), 668–669 (1995). [CrossRef]
• W. Liang, N. Satyan, A. Yariv, A. Kewitsch, and G. Rakuljic, “Tiled-aperture coherent beam combining using optical phase-lock loops,” Electron. Lett.44(14), 875–876 (2008). [CrossRef]

IEEE J. Sel. Top. Quantum Electron.

• S. Gray, D. T. Walton, X. Chen, J. Wang, M.-J. Li, A. Liu, A. B. Ruffin, J. A. Demeritt, and L. A. Zenteno, “Optical fibers with tailored acoustic speed profiles for suppressing stimulated Brillouin scattering in high-power, single-frequency sources,” IEEE J. Sel. Top. Quantum Electron.15(1), 37–46 (2009). [CrossRef]
• N. Satyan, W. Liang, A. Kewitsch, G. Rakuljic, and A. Yariv, “Coherent power combination of semiconductor lasers using optical phase-lock loops,” IEEE J. Sel. Top. Quantum Electron.15(2), 240–247 (2009). [CrossRef]

IEEE Photon. Technol. Lett.

• N. Satyan, W. Liang, F. Aflatouni, A. Yariv, A. Kewitsch, G. Rakuljic, and H. Hashemi, “Phase-controlled apertures using heterodyne optical phase-locked loops,” IEEE Photon. Technol. Lett.20(11), 897–899 (2008). [CrossRef]

J. Lightwave Technol.

• N. Satyan, G. Rakuljic, and A. Yariv, “Chirp multiplication by four wave mixing for wideband swept-frequency sources for high resolution imaging,” J. Lightwave Technol.28(14), 2077–2083 (2010). [CrossRef]

Opt. Express

• J. B. Coles, B. P.-P. Kuo, N. Alic, S. Moro, C.-S. Bres, J. M. C. Boggio, P. A. Andrekson, M. Karlsson, and S. Radic, “Bandwidth-efficient phase modulation techniques for stimulated Brillouin scattering suppression in fiber optic parametric amplifiers,” Opt. Express18(17), 18138–18150 (2010). [CrossRef] [PubMed]
• N. Satyan, A. Vasilyev, G. Rakuljic, V. Leyva, and A. Yariv, “Precise control of broadband frequency chirps using optoelectronic feedback,” Opt. Express17(18), 15991–15999 (2009). [CrossRef] [PubMed]
• W. Liang, N. Satyan, A. Yariv, A. Kewitsch, G. Rakuljic, F. Aflatouni, H. Hashemi, and J. Ungar, “Coherent power combination of two master-oscillator-power-amplifier (MOPA) semiconductor lasers using optical phase lock loops,” Opt. Express15(6), 3201–3205 (2007). [CrossRef] [PubMed]
• O. Terra, G. Grosche, and H. Schnatz, “Brillouin amplification in phase coherent transfer of optical frequencies over 480 km fiber,” Opt. Express18(15), 16102–16111 (2010). [CrossRef] [PubMed]

Opt. Lett.

• V. Lanticq, S. Jiang, R. Gabet, Y. Jaouën, F. Taillade, G. Moreau, and G. P. Agrawal, “Self-referenced and single-ended method to measure Brillouin gain in monomode optical fibers,” Opt. Lett.34(7), 1018–1020 (2009). [CrossRef] [PubMed]
• G. D. Goodno, S. J. McNaught, J. E. Rothenberg, T. S. McComb, P. A. Thielen, M. G. Wickham, and M. E. Weber, “Active phase and polarization locking of a 1.4 kW fiber amplifier,” Opt. Lett.35(10), 1542–1544 (2010). [CrossRef] [PubMed]
• D. Taverner, D. J. Richardson, L. Dong, J. E. Caplen, K. Williams, and R. V. Penty, “158-µJ pulses from a single-transverse-mode, large-mode-area erbium-doped fiber amplifier,” Opt. Lett.22(6), 378–380 (1997). [CrossRef] [PubMed]
• I. Dajani, C. Zeringue, C. Lu, C. Vergien, L. Henry, and C. Robin, “Stimulated Brillouin scattering suppression through laser gain competition: scalability to high power,” Opt. Lett.35(18), 3114–3116 (2010). [CrossRef] [PubMed]
• S. J. Augst, T. Y. Fan, and A. Sanchez, “Coherent beam combining and phase noise measurements of ytterbium fiber amplifiers,” Opt. Lett.29(5), 474–476 (2004). [CrossRef] [PubMed]

Phys. Rev. B

• C. G. Carlson, R. B. Ross, J. M. Schafer, J. B. Spring, and B. G. Ward, “Full vectorial analysis of Brillouin gain in random acoustically microstructured photonic crystal fibers,” Phys. Rev. B83(23), 235110 (2011). [CrossRef]

Proc. SPIE

• C. Robin, I. Dajani, and F. Chiragh, “Experimental studies of segmented acoustically tailored photonic crystal fiber amplifier with 494 W single-frequency output,” Proc. SPIE7914, 79140B, 79140B-8 (2011). [CrossRef]

Other

• Model YLS-10000-SM, IPG Photonics
• D. Brown, M. Dennis, and W. Torruellas, “Improved phase modulation for SBS mitigation in kW-class fiber amplifiers,” SPIE Photonics West, San Francisco, CA, 24 Jan. 2011.
• J. Edgecumbe, T. Ehrenreich, C.-H. Wang, K. Farley, J. Galipeau, R. Leveille, D. Björk, I. Majid, and K. Tankala, “kW class, narrow-linewidth, counter pumped fiber amplifiers,” Solid State and Diode Laser Technical Review, 17 June 2010.
• DARPA ADHELS contract No. HR0011-060C-0029, final report (2008).
• N. Satyan, A. Vasilyev, G. Rakuljic, J.O. White, and A. Yariv, manuscript submitted for publication.
• D. Brown, M. Dennis, and W. Torruellas, “Improved phase modulation for SBS mitigation in kW-class fiber amplifiers,” Photonics West, 24 Jan. 2011.

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