Abstract

An efficient technique in which fiber lasers are coherently added in free space is presented. Since the high power of the combined output light propagates in free space rather than inside, fiber optical damage and deleterious nonlinear effects are substantially reduced. Two different configurations are investigated. One involves conventional intracavity coupling between the lasers. The other is a novel configuration where the coupling is done out of the combined cavities. The latter configuration requires much less coupling for obtaining the same output power, so the damage to the fiber is further reduced.

© 2007 Optical Society of America

Full Article  |  PDF Article

References

  • View by:
  • |
  • |
  • |

  1. D. Sabourdy, V. Kermene, A. Desfarges-Berthelemot, M. Vampouille, and A. Barthelemy, Appl. Phys. B 75, 503 (2002).
    [CrossRef]
  2. L. Fabiny, P. Colet, R. Roy, and D. Lensta, Phys. Rev. A 47, 4287 (1993).
    [CrossRef] [PubMed]
  3. A. A. Ishaaya, V. Eckhouse, L. Shimshi, N. Davidson, and A. A. Friesem, Opt. Lett. 30, 1770 (2005).
    [CrossRef] [PubMed]
  4. H. Bruesselback, D. C. Jones, M. S. Mangir, M. Minden, and J. L. Rogers, Opt. Lett. 30, 1339 (2005).
    [CrossRef]
  5. V. Eckhouse, A. A. Ishaaya, L. Shimshi, N. Davidson, and A. A. Friesem, Opt. Lett. 31, 350 (2006).
    [CrossRef] [PubMed]
  6. X. Zhu and R. Jain, Opt. Lett. 32, 26 (2007).
    [CrossRef]
  7. D. Sabourdy, V. Kermene, A. Desfarges-Berthelemot, L. Lefort, and A. Barthelemy, Opt. Express 11, 87 (2003).
    [CrossRef] [PubMed]
  8. D. Sabourdy, V. Kermene, A. Desfarges-Berthelemot, L. Lefort, A. Barthelemy, P. Even, and D. Pureur, Opt. Express 11, 87 (2002).
    [CrossRef]
  9. A. Shirakawa, T. Saitou, T. Sekiguchi, and K.-i. Ueda, Opt. Express 10, 1167 (2002).
    [PubMed]
  10. M. DiDomenico, Jr., Appl. Phys. Lett. 8, 20 (1966).
    [CrossRef]
  11. A. E. Siegman, Lasers (University Science, 1986).
  12. M. C. Amann and J. Buus, Tunable Laser Diodes (Artech House, 1998).

2007 (1)

2006 (1)

2005 (2)

2003 (1)

2002 (3)

1993 (1)

L. Fabiny, P. Colet, R. Roy, and D. Lensta, Phys. Rev. A 47, 4287 (1993).
[CrossRef] [PubMed]

1966 (1)

M. DiDomenico, Jr., Appl. Phys. Lett. 8, 20 (1966).
[CrossRef]

Amann, M. C.

M. C. Amann and J. Buus, Tunable Laser Diodes (Artech House, 1998).

Barthelemy, A.

Bruesselback, H.

Buus, J.

M. C. Amann and J. Buus, Tunable Laser Diodes (Artech House, 1998).

Colet, P.

L. Fabiny, P. Colet, R. Roy, and D. Lensta, Phys. Rev. A 47, 4287 (1993).
[CrossRef] [PubMed]

Davidson, N.

Desfarges-Berthelemot, A.

DiDomenico, M.

M. DiDomenico, Jr., Appl. Phys. Lett. 8, 20 (1966).
[CrossRef]

Eckhouse, V.

Even, P.

Fabiny, L.

L. Fabiny, P. Colet, R. Roy, and D. Lensta, Phys. Rev. A 47, 4287 (1993).
[CrossRef] [PubMed]

Friesem, A. A.

Ishaaya, A. A.

Jain, R.

Jones, D. C.

Kermene, V.

Lefort, L.

Lensta, D.

L. Fabiny, P. Colet, R. Roy, and D. Lensta, Phys. Rev. A 47, 4287 (1993).
[CrossRef] [PubMed]

Mangir, M. S.

Minden, M.

Pureur, D.

Rogers, J. L.

Roy, R.

L. Fabiny, P. Colet, R. Roy, and D. Lensta, Phys. Rev. A 47, 4287 (1993).
[CrossRef] [PubMed]

Sabourdy, D.

Saitou, T.

Sekiguchi, T.

Shimshi, L.

Shirakawa, A.

Siegman, A. E.

A. E. Siegman, Lasers (University Science, 1986).

Ueda, K.-i.

Vampouille, M.

D. Sabourdy, V. Kermene, A. Desfarges-Berthelemot, M. Vampouille, and A. Barthelemy, Appl. Phys. B 75, 503 (2002).
[CrossRef]

Zhu, X.

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (4)

Fig. 1
Fig. 1

Basic configurations for coherent addition of fiber lasers: (a) intracavity addition, (b) outer-cavity addition. FBG, high-reflection fiber Bragg grating; BS, 50% beam splitter.

Fig. 2
Fig. 2

Efficiency as a function of coupling for intracavity and outer-cavity configurations.

Fig. 3
Fig. 3

Experimental overall spectrum for the outer-cavity configuration of Fig. 1b: (a) separation between longitudinal modes, (b)–(d) separation between spectral bands. (a)–(c) were measured by Fourier-transforming the time signal of the fast photodetector and (d) with the grating spectrometer.

Fig. 4
Fig. 4

Calculated overall spectrum for the outer-cavity configuration using the cold-cavity effective reflectivity. The various parts correspond to the parts in Fig. 3.

Metrics