Abstract

We report experiments on a new laser architecture involving phase contrast filtering to coherently combine an array of fiber lasers. We demonstrate that the new technique yields a more stable phase-locking than standard methods using only amplitude filtering. A spectral analysis of the output beams shows that the new scheme generates more resonant frequencies common to the coupled lasers. This property can enhance the combining efficiency when the number of lasers to be coupled is large.

© 2012 OSA

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  1. L. Michaille, C. R. Bennett, D. M. Taylor, T. J. Shepherd, J. Broeng, H. R. Simonsen, and A. Petersson, “Phase locking and supermode selection in multicore photonic crystal fiber lasers with a large doped area,” Opt. Lett.30(13), 1668–1670 (2005).
    [CrossRef] [PubMed]
  2. D. Sabourdy, V. Kermene, A. Desfarges-Berthelemot, and A. Barthélémy, “Power scaling of fibre lasers with all-fibre interferometric cavity,” Electron. Lett.38(14), 692–693 (2002).
    [CrossRef]
  3. A. Shirakawa, T. Saitou, T. Sekiguchi, and K. Ueda, “Coherent addition of fiber lasers by use of a fiber coupler,” Opt. Express10(21), 1167–1172 (2002).
    [CrossRef] [PubMed]
  4. B. Colombeau, M. Vampouille, V. Kermene, A. Desfarges, and C. Froehly, “Spatial shaping of coherent waves inside a confocal laser,” Pure Appl. Opt.3(5), 757–773 (1994).
    [CrossRef]
  5. C. J. Corcoran and F. Durville, “Experimental demonstration of a phase-locked laser array using a self-Fourier cavity,” Appl. Opt.86(20), 201118 (2005).
  6. J. Lhermite, A. Desfarges-Berthelemot, V. Kermène, and A. Barthélémy, “Passive phase locking of an array of four fiber amplifiers by an all-optical feedback loop,” Opt. Lett.32(13), 1842–1844 (2007).
    [CrossRef] [PubMed]
  7. T. H. Loftus, A. M. Thomas, M. Norsen, J. Minelly, P. Jones, E. Honea, S. A. Shakir, S. Hendow, W. Culver, B. Nelson, and M. Fitelson, “Four-channel, high power, passively phase locked fiber array,” in Advanced Solid-State Photonics, Technical Digest (CD) (Optical Society of America, 2008), paper WA4.
  8. S. Auroux, V. Kermène, A. Desfarges-Berthelemot, and A. Barthélémy, “Coherence properties of two fiber lasers coupled by mutual injection,” Opt. Express17(20), 17694–17699 (2009).
    [CrossRef] [PubMed]
  9. E. Ronen and A. A. Ishaaya, “Phase locking a fiber laser array via diffractive coupling,” Opt. Express19(2), 1510–1515 (2011).
    [CrossRef] [PubMed]
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    [CrossRef] [PubMed]
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    [CrossRef]
  12. J. E. Rothenberg, “Passive coherent phasing of fiber laser arrays,” Proc. SPIE6873, 687315, 687315-9 (2008).
    [CrossRef]
  13. W.-Z. Chang, T.-W. Wu, H. G. Winful, and A. Galvanauskas, “Array size scalability of passively coherently phased fiber laser arrays,” Opt. Express18(9), 9634–9642 (2010).
    [CrossRef] [PubMed]
  14. F. Jeux, A. Desfarges-Berthelemot, V. Kermène, J. Guillot, and A. Barthelemy, “Passive coherent combining of lasers with phase-contrast filtering for enhanced efficiency,” Appl. Phys. B108(1), 81–87 (2012).
    [CrossRef]
  15. J. W. Arkwright, P. Elango, G. R. Atkins, T. Whitbread, and M. J. F. Digonnet, “Experimental and theoretical analysis of the resonant nonlinearity in Ytterbium-doped fiber,” J. Lightwave Technol.16(5), 798–806 (1998).
    [CrossRef]
  16. A. A. Fotiadi, O. L. Antipov, and P. Mégret, “Dynamics of pump-induced refractive index changes in single-mode Yb-doped optical fibers,” Opt. Express16(17), 12658–12663 (2008).
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  17. C. J. Corcoran and F. Durville, “Passive phasing in a coherent laser array,” IEEE J. Sel. Top. Quantum Electron.15(2), 294–300 (2009).
    [CrossRef]

2012 (1)

F. Jeux, A. Desfarges-Berthelemot, V. Kermène, J. Guillot, and A. Barthelemy, “Passive coherent combining of lasers with phase-contrast filtering for enhanced efficiency,” Appl. Phys. B108(1), 81–87 (2012).
[CrossRef]

2011 (1)

2010 (2)

2009 (2)

2008 (2)

2007 (1)

2005 (3)

C. J. Corcoran and F. Durville, “Experimental demonstration of a phase-locked laser array using a self-Fourier cavity,” Appl. Opt.86(20), 201118 (2005).

D. Kouznetsov, J. Bisson, A. Shirakawa, and K. Ueda, “Limits of coherent addition of lasers: simple estimate,” Opt. Rev.12(6), 445–447 (2005).
[CrossRef]

L. Michaille, C. R. Bennett, D. M. Taylor, T. J. Shepherd, J. Broeng, H. R. Simonsen, and A. Petersson, “Phase locking and supermode selection in multicore photonic crystal fiber lasers with a large doped area,” Opt. Lett.30(13), 1668–1670 (2005).
[CrossRef] [PubMed]

2002 (2)

D. Sabourdy, V. Kermene, A. Desfarges-Berthelemot, and A. Barthélémy, “Power scaling of fibre lasers with all-fibre interferometric cavity,” Electron. Lett.38(14), 692–693 (2002).
[CrossRef]

A. Shirakawa, T. Saitou, T. Sekiguchi, and K. Ueda, “Coherent addition of fiber lasers by use of a fiber coupler,” Opt. Express10(21), 1167–1172 (2002).
[CrossRef] [PubMed]

1998 (1)

1994 (1)

B. Colombeau, M. Vampouille, V. Kermene, A. Desfarges, and C. Froehly, “Spatial shaping of coherent waves inside a confocal laser,” Pure Appl. Opt.3(5), 757–773 (1994).
[CrossRef]

Antipov, O. L.

Arkwright, J. W.

Atkins, G. R.

Auroux, S.

Barthelemy, A.

F. Jeux, A. Desfarges-Berthelemot, V. Kermène, J. Guillot, and A. Barthelemy, “Passive coherent combining of lasers with phase-contrast filtering for enhanced efficiency,” Appl. Phys. B108(1), 81–87 (2012).
[CrossRef]

Barthélémy, A.

Bennett, C. R.

Bisson, J.

D. Kouznetsov, J. Bisson, A. Shirakawa, and K. Ueda, “Limits of coherent addition of lasers: simple estimate,” Opt. Rev.12(6), 445–447 (2005).
[CrossRef]

Broeng, J.

Chang, W.-Z.

Colombeau, B.

B. Colombeau, M. Vampouille, V. Kermene, A. Desfarges, and C. Froehly, “Spatial shaping of coherent waves inside a confocal laser,” Pure Appl. Opt.3(5), 757–773 (1994).
[CrossRef]

Corcoran, C. J.

C. J. Corcoran and F. Durville, “Passive phasing in a coherent laser array,” IEEE J. Sel. Top. Quantum Electron.15(2), 294–300 (2009).
[CrossRef]

C. J. Corcoran and F. Durville, “Experimental demonstration of a phase-locked laser array using a self-Fourier cavity,” Appl. Opt.86(20), 201118 (2005).

Davidson, N.

Desfarges, A.

B. Colombeau, M. Vampouille, V. Kermene, A. Desfarges, and C. Froehly, “Spatial shaping of coherent waves inside a confocal laser,” Pure Appl. Opt.3(5), 757–773 (1994).
[CrossRef]

Desfarges-Berthelemot, A.

F. Jeux, A. Desfarges-Berthelemot, V. Kermène, J. Guillot, and A. Barthelemy, “Passive coherent combining of lasers with phase-contrast filtering for enhanced efficiency,” Appl. Phys. B108(1), 81–87 (2012).
[CrossRef]

S. Auroux, V. Kermène, A. Desfarges-Berthelemot, and A. Barthélémy, “Coherence properties of two fiber lasers coupled by mutual injection,” Opt. Express17(20), 17694–17699 (2009).
[CrossRef] [PubMed]

J. Lhermite, A. Desfarges-Berthelemot, V. Kermène, and A. Barthélémy, “Passive phase locking of an array of four fiber amplifiers by an all-optical feedback loop,” Opt. Lett.32(13), 1842–1844 (2007).
[CrossRef] [PubMed]

D. Sabourdy, V. Kermene, A. Desfarges-Berthelemot, and A. Barthélémy, “Power scaling of fibre lasers with all-fibre interferometric cavity,” Electron. Lett.38(14), 692–693 (2002).
[CrossRef]

Digonnet, M. J. F.

Durville, F.

C. J. Corcoran and F. Durville, “Passive phasing in a coherent laser array,” IEEE J. Sel. Top. Quantum Electron.15(2), 294–300 (2009).
[CrossRef]

C. J. Corcoran and F. Durville, “Experimental demonstration of a phase-locked laser array using a self-Fourier cavity,” Appl. Opt.86(20), 201118 (2005).

Elango, P.

Fotiadi, A. A.

Fridman, M.

Friesem, A. A.

Froehly, C.

B. Colombeau, M. Vampouille, V. Kermene, A. Desfarges, and C. Froehly, “Spatial shaping of coherent waves inside a confocal laser,” Pure Appl. Opt.3(5), 757–773 (1994).
[CrossRef]

Galvanauskas, A.

Guillot, J.

F. Jeux, A. Desfarges-Berthelemot, V. Kermène, J. Guillot, and A. Barthelemy, “Passive coherent combining of lasers with phase-contrast filtering for enhanced efficiency,” Appl. Phys. B108(1), 81–87 (2012).
[CrossRef]

Ishaaya, A. A.

Jeux, F.

F. Jeux, A. Desfarges-Berthelemot, V. Kermène, J. Guillot, and A. Barthelemy, “Passive coherent combining of lasers with phase-contrast filtering for enhanced efficiency,” Appl. Phys. B108(1), 81–87 (2012).
[CrossRef]

Kermene, V.

D. Sabourdy, V. Kermene, A. Desfarges-Berthelemot, and A. Barthélémy, “Power scaling of fibre lasers with all-fibre interferometric cavity,” Electron. Lett.38(14), 692–693 (2002).
[CrossRef]

B. Colombeau, M. Vampouille, V. Kermene, A. Desfarges, and C. Froehly, “Spatial shaping of coherent waves inside a confocal laser,” Pure Appl. Opt.3(5), 757–773 (1994).
[CrossRef]

Kermène, V.

Kouznetsov, D.

D. Kouznetsov, J. Bisson, A. Shirakawa, and K. Ueda, “Limits of coherent addition of lasers: simple estimate,” Opt. Rev.12(6), 445–447 (2005).
[CrossRef]

Lhermite, J.

Mégret, P.

Michaille, L.

Nixon, M.

Petersson, A.

Ronen, E.

Rothenberg, J. E.

J. E. Rothenberg, “Passive coherent phasing of fiber laser arrays,” Proc. SPIE6873, 687315, 687315-9 (2008).
[CrossRef]

Sabourdy, D.

D. Sabourdy, V. Kermene, A. Desfarges-Berthelemot, and A. Barthélémy, “Power scaling of fibre lasers with all-fibre interferometric cavity,” Electron. Lett.38(14), 692–693 (2002).
[CrossRef]

Saitou, T.

Sekiguchi, T.

Shepherd, T. J.

Shirakawa, A.

D. Kouznetsov, J. Bisson, A. Shirakawa, and K. Ueda, “Limits of coherent addition of lasers: simple estimate,” Opt. Rev.12(6), 445–447 (2005).
[CrossRef]

A. Shirakawa, T. Saitou, T. Sekiguchi, and K. Ueda, “Coherent addition of fiber lasers by use of a fiber coupler,” Opt. Express10(21), 1167–1172 (2002).
[CrossRef] [PubMed]

Simonsen, H. R.

Taylor, D. M.

Ueda, K.

D. Kouznetsov, J. Bisson, A. Shirakawa, and K. Ueda, “Limits of coherent addition of lasers: simple estimate,” Opt. Rev.12(6), 445–447 (2005).
[CrossRef]

A. Shirakawa, T. Saitou, T. Sekiguchi, and K. Ueda, “Coherent addition of fiber lasers by use of a fiber coupler,” Opt. Express10(21), 1167–1172 (2002).
[CrossRef] [PubMed]

Vampouille, M.

B. Colombeau, M. Vampouille, V. Kermene, A. Desfarges, and C. Froehly, “Spatial shaping of coherent waves inside a confocal laser,” Pure Appl. Opt.3(5), 757–773 (1994).
[CrossRef]

Whitbread, T.

Winful, H. G.

Wu, T.-W.

Appl. Opt. (1)

C. J. Corcoran and F. Durville, “Experimental demonstration of a phase-locked laser array using a self-Fourier cavity,” Appl. Opt.86(20), 201118 (2005).

Appl. Phys. B (1)

F. Jeux, A. Desfarges-Berthelemot, V. Kermène, J. Guillot, and A. Barthelemy, “Passive coherent combining of lasers with phase-contrast filtering for enhanced efficiency,” Appl. Phys. B108(1), 81–87 (2012).
[CrossRef]

Electron. Lett. (1)

D. Sabourdy, V. Kermene, A. Desfarges-Berthelemot, and A. Barthélémy, “Power scaling of fibre lasers with all-fibre interferometric cavity,” Electron. Lett.38(14), 692–693 (2002).
[CrossRef]

IEEE J. Sel. Top. Quantum Electron. (1)

C. J. Corcoran and F. Durville, “Passive phasing in a coherent laser array,” IEEE J. Sel. Top. Quantum Electron.15(2), 294–300 (2009).
[CrossRef]

J. Lightwave Technol. (1)

Opt. Express (5)

Opt. Lett. (3)

Opt. Rev. (1)

D. Kouznetsov, J. Bisson, A. Shirakawa, and K. Ueda, “Limits of coherent addition of lasers: simple estimate,” Opt. Rev.12(6), 445–447 (2005).
[CrossRef]

Proc. SPIE (1)

J. E. Rothenberg, “Passive coherent phasing of fiber laser arrays,” Proc. SPIE6873, 687315, 687315-9 (2008).
[CrossRef]

Pure Appl. Opt. (1)

B. Colombeau, M. Vampouille, V. Kermene, A. Desfarges, and C. Froehly, “Spatial shaping of coherent waves inside a confocal laser,” Pure Appl. Opt.3(5), 757–773 (1994).
[CrossRef]

Other (1)

T. H. Loftus, A. M. Thomas, M. Norsen, J. Minelly, P. Jones, E. Honea, S. A. Shakir, S. Hendow, W. Culver, B. Nelson, and M. Fitelson, “Four-channel, high power, passively phase locked fiber array,” in Advanced Solid-State Photonics, Technical Digest (CD) (Optical Society of America, 2008), paper WA4.

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Figures (4)

Fig. 1
Fig. 1

(a) Scheme of the 4 amplifier laser cavity using the hybrid amplitude/phase plate (APP). µl microlens array, L positive lens, PC polarization controller, Iso. isolator, YDFA Ytterbium doped fiber amplifier, P1 and P2 image plans. (b) APP filter. Tc transmission of the central part, Ts transmission of the outer part corresponding to the high spatial frequency of the far field pattern.

Fig. 2
Fig. 2

(a) Far field pattern of the 4 output beams from the laser using the APP component. (b) Far field cross section.

Fig. 3
Fig. 3

Normalized spectra recorded at a similar output power (a) from each 4 independent lasers, (b) from the standard laser architecture using pinhole, (c) and from the new laser architecture with APP component.

Fig. 4
Fig. 4

Evolution of the peak power collected on the propagation axis in the far field (a) at the output of the standard laser architecture using a pinhole as filter (b) and at the output of the new laser configuration using the APP filter.

Equations (1)

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[C]=β.[I]( ( βi )/N )

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