Abstract

We have fabricated an ytterbium doped all-glass double-clad large mode area holey fiber. A highly efficient cladding pumped single transverse mode holey fiber laser has been demonstrated, allowing continuous-wave output powers in excess of 1W with efficiencies of more than 80%. Furthermore both Q-switched and mode-locked operation of the laser have been demonstrated.

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References

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  1. P. Petropoulos, T.M. Monro, W. Belardi, K. Furusawa, J.H. Lee, and D.J. Richardson, "2R-regenerative all-optical switch based on a highly nonlinear holey fiber," Opt. Lett. 26, 1233-1235 (2001).
    [CrossRef]
  2. J.H.V. Price, K. Furusawa, T.M. Monro, L. Lefort, and 2. D. J. Richardson, "A tuneable femtosecond pulse source operating in the range 1.06-1.33 microns based on a Yb doped holey fiber amplifier," Conference on Lasers and Electro-Optics, Technical Digest, (Optical Society of America, Washington DC, 2001), CPD-1.
  3. J. C. Knight, T. A. Birks, R. F. Cregan, P. St. J. Russel and J.-P. de Sandro, "Large mode area photonic crystal fiber," Electron. Lett. 34, 1347-1348 (1998).
    [CrossRef]
  4. T. . Birks, J. . Knight, and P. St. J. Russell, "Endlessly single-mode photonic crystal fiber," Opt. Lett. 22, 961-963 (1997).
    [CrossRef] [PubMed]
  5. J. C. Baggett, T. M. Monro, K. Furusawa, D. J. Richardson, "Comparative study of large mode holey and conventional fibers," Opt. Lett. 26, 1045-1047 (2001).
    [CrossRef]
  6. J. K. Sahu, C. C. Renaud, K. Furusawa, R Selvas, J. A. Alvarez-Chavez, D. J. Richardson, and J. Nilsson, "Jacketed air clad cladding pumped ytterbium doped fibre laser with wide tuning range," Electron. Lett. 38, 1116-1117 (2001).
    [CrossRef]
  7. W. J. Wadsworth, J. C. Knight, and P.st. J. Russell, "Large mode area photonic crystal fibre laser," in OSA Trends in Optics and Photonics 56, Conference on Lasers and Electro-Optics, Technical Digest, Postconference Edition (Optical Society of America, Washington DC, 2001), pp. 319.
  8. R. Paschotta, J. Nilsson, P. R. Barber, J. E. Caplen, A. C. Tropper and D. C. Hanna "Lifetime quenching in Yb doped fibres," Opt. Commun. 136, 375-378, (1995).
    [CrossRef]
  9. V. A. Kozlow, J. Hernandez-Cordero, R. L. Shubochkin, A. L. G. Carter, T. F. Morse, "Candy-cane fiber silica-air double-clad optical fiber," IEEE Photon. Tech. Lett. 12, 1007-1009 (2000).
    [CrossRef]
  10. T. M. Monro, D. J. Richardson, N. G. R. Broderick, and P. J.Bennett, "Holey optical fibers: efficient modal model," J Lightwave Tech. 17, 1093-1102 (1999).
    [CrossRef]
  11. M. Midrio, M. P. Singh, and C. G. Someda, "The space filling mode of holey fibers: an analytical vectorial solution," J. Lightwave Tech. 18, 1031-1037 (2000).
    [CrossRef]
  12. Z. Zhu and T. G. Brown, "Analysis of the space filling modes of photonic crystal fibers," Opt. Express 8, 547-554 (2001). http://www.opticsexpress.org/oearchive/source/32607.htm
    [CrossRef] [PubMed]
  13. V. Dominic, S. MacCormak, R. Waarts, S. Sanders, S. Bicknese, R. Dohle, E. Wolak, P. S. Yeh, and E. Zucher, "110 W Fiber Laser," Conference on Lasers and Electro-Optics, Technical Digest, (Optical Society of America, Washington DC, 1999), CPD-11.

Other

P. Petropoulos, T.M. Monro, W. Belardi, K. Furusawa, J.H. Lee, and D.J. Richardson, "2R-regenerative all-optical switch based on a highly nonlinear holey fiber," Opt. Lett. 26, 1233-1235 (2001).
[CrossRef]

J.H.V. Price, K. Furusawa, T.M. Monro, L. Lefort, and 2. D. J. Richardson, "A tuneable femtosecond pulse source operating in the range 1.06-1.33 microns based on a Yb doped holey fiber amplifier," Conference on Lasers and Electro-Optics, Technical Digest, (Optical Society of America, Washington DC, 2001), CPD-1.

J. C. Knight, T. A. Birks, R. F. Cregan, P. St. J. Russel and J.-P. de Sandro, "Large mode area photonic crystal fiber," Electron. Lett. 34, 1347-1348 (1998).
[CrossRef]

T. . Birks, J. . Knight, and P. St. J. Russell, "Endlessly single-mode photonic crystal fiber," Opt. Lett. 22, 961-963 (1997).
[CrossRef] [PubMed]

J. C. Baggett, T. M. Monro, K. Furusawa, D. J. Richardson, "Comparative study of large mode holey and conventional fibers," Opt. Lett. 26, 1045-1047 (2001).
[CrossRef]

J. K. Sahu, C. C. Renaud, K. Furusawa, R Selvas, J. A. Alvarez-Chavez, D. J. Richardson, and J. Nilsson, "Jacketed air clad cladding pumped ytterbium doped fibre laser with wide tuning range," Electron. Lett. 38, 1116-1117 (2001).
[CrossRef]

W. J. Wadsworth, J. C. Knight, and P.st. J. Russell, "Large mode area photonic crystal fibre laser," in OSA Trends in Optics and Photonics 56, Conference on Lasers and Electro-Optics, Technical Digest, Postconference Edition (Optical Society of America, Washington DC, 2001), pp. 319.

R. Paschotta, J. Nilsson, P. R. Barber, J. E. Caplen, A. C. Tropper and D. C. Hanna "Lifetime quenching in Yb doped fibres," Opt. Commun. 136, 375-378, (1995).
[CrossRef]

V. A. Kozlow, J. Hernandez-Cordero, R. L. Shubochkin, A. L. G. Carter, T. F. Morse, "Candy-cane fiber silica-air double-clad optical fiber," IEEE Photon. Tech. Lett. 12, 1007-1009 (2000).
[CrossRef]

T. M. Monro, D. J. Richardson, N. G. R. Broderick, and P. J.Bennett, "Holey optical fibers: efficient modal model," J Lightwave Tech. 17, 1093-1102 (1999).
[CrossRef]

M. Midrio, M. P. Singh, and C. G. Someda, "The space filling mode of holey fibers: an analytical vectorial solution," J. Lightwave Tech. 18, 1031-1037 (2000).
[CrossRef]

Z. Zhu and T. G. Brown, "Analysis of the space filling modes of photonic crystal fibers," Opt. Express 8, 547-554 (2001). http://www.opticsexpress.org/oearchive/source/32607.htm
[CrossRef] [PubMed]

V. Dominic, S. MacCormak, R. Waarts, S. Sanders, S. Bicknese, R. Dohle, E. Wolak, P. S. Yeh, and E. Zucher, "110 W Fiber Laser," Conference on Lasers and Electro-Optics, Technical Digest, (Optical Society of America, Washington DC, 1999), CPD-11.

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Figures (5)

Figure 1.
Figure 1.

The refractive index profile of the ytterbium doped LMA fiber preform, from which the doped core (surrounded by the dotted lines) was extracted.

Figure 2.
Figure 2.

SEM photograph of the air-clad ytterbium doped HF.

Figure 3.
Figure 3.

Optimum parameter regime for doped LMA HF (Λ=10µm, λ=1.06µm). The doped core does not significantly influence the guidance for structures located under the solid line (Eq.2) and structures under the dashed line are SM (Eq.1). The diamond indicates the fiber from Fig.2.

Figure 4.
Figure 4.

The CW laser outputs for (a) 976nm [circles] and (b) 915nm [squares] pump.

Figure 5.
Figure 5.

Tuning curve obtained for a pump power of 1.33W.

Equations (2)

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V = 2 π ρ λ NA = 2 π ρ λ ( n silica + Δ n ) 2 n cl 2 ( λ )
Δ n < n silica 2 n eff 2 ( λ ) 2 n silica

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