Abstract

In this work, we systematically studied the mitigation of photodarkening (PD) in ytterbium-doped silica fiber co-doped with lithium (Li). Adding a proper concentration of Li+ ions to the core glass composition, the PD-induced excess loss can be reduced by 25%. The results showed that the effect on numerical aperture and laser efficiency was very small. Compared with the sodium (Na) co-doped Yb/Al silica fiber at the same concentration, the mitigation of the PD effect through Li+ and Na+ ions co-doping was analyzed and discussed. Furthermore, a hypothesis was proposed for the mechanism of alkali metal Li and Na co-doping to mitigate the PD effect. More effective core composition and doping concentration were proposed to provide guidance of high output power gain fiber preparation.

© 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

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    [Crossref]
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    [Crossref] [PubMed]
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    [Crossref] [PubMed]
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2017 (1)

2016 (1)

2015 (2)

2014 (3)

M. N. Zervas and C. A. Codemard, “High power fiber lasers: a review,” IEEE J. Sel. Top. Quant. 20(5), 0904123 (2014).
[Crossref]

C. G. Ye, L. Petit, J. J. Koponen, I.-N. Hu, and A. Galvanauskas, “Short-term and long-term stability in ytterbium-doped high-power fiber lasers and amplifiers,” IEEE J. Sel. Top. Quant. 20(5), 1–12 (2014).

R. Piccoli, T. Robin, D. Méchin, T. Brand, U. Klotzback, and S. Taccheo, “Effective mitigation of photodarkening in Yb-doped lasers based on Al-silicate using UV/visible light,” Proc. SPIE 8961, 896121 (2014).
[Crossref]

2013 (4)

2012 (1)

2011 (2)

K. E. Mattsson, “Photo darkening of rare earth doped silica,” Opt. Express 19(21), 19797–19812 (2011).
[Crossref] [PubMed]

J. Nilsson and D. N. Payne, “Physics. High-power fiber lasers,” Science 332(6032), 921–922 (2011).
[Crossref] [PubMed]

2010 (1)

2009 (4)

2008 (3)

M. Engholm and L. Norin, “Reduction of photodarkening in Yb/Al-doped fiber lasers,” Proc. SPIE 6873, 68731E (2008).
[Crossref]

S. Unger, A. Schwuchow, S. Jetschke, V. Reichel, A. Scheffel, and J. Kirchhof, “Optical properties of Yb-doped laser fibers in dependence on codopants and preparation conditions,” Proc. SPIE 6890, 689016 (2008).
[Crossref]

S. Jetschke, S. Unger, A. Schwuchow, M. Leich, and J. Kirchhof, “Efficient Yb laser fibers with low photodarkening by optimization of the core composition,” Opt. Express 16(20), 15540–15545 (2008).
[Crossref] [PubMed]

2007 (6)

2006 (1)

2004 (1)

M. A. Mel’kumov, I. A. Bufetov, K. S. Kravtsov, A. V. Shubin, and E. M. Dianov, “Lasing parameters of ytterbium-doped fibres doped with P2O5 and Al2O3,” Quantum Electron. 34(9), 843–848 (2004).
[Crossref]

1997 (1)

R. Paschotta, J. Nilsson, A. C. Tropper, and D. C. Hanna, “Ytterbium-doped fiber amplifiers,” IEEE J. Quantum Electron. 33(7), 1049–1056 (1997).
[Crossref]

Abramov, A.

V. Fomin, V. Gapontsev, E. Shcherbakov, A. Abramov, A. Ferin, and D. Mochalov, “100 kW CW fiber laser for industrial applications,” IEEE International Conference on Laser Optics, 1 (2014).
[Crossref]

Barmenkov, Y. O.

A. D. Guzman Chávez, A. V. Kir’yanov, Y. O. Barmenkov, and N. N. Il’ichev, “Reversible photo-darkening and resonant photo-bleaching of Ytterbium-doped silica fiber at in-core 977-nm and 543-nm irradiation,” Laser Phys. Lett. 4(10), 734–739 (2007).
[Crossref]

Basu, C.

Bello Doua, R.

Boullet, J.

Boyland, A. J.

Brand, T.

R. Piccoli, T. Robin, D. Méchin, T. Brand, U. Klotzback, and S. Taccheo, “Effective mitigation of photodarkening in Yb-doped lasers based on Al-silicate using UV/visible light,” Proc. SPIE 8961, 896121 (2014).
[Crossref]

Bufetov, I. A.

M. A. Mel’kumov, I. A. Bufetov, K. S. Kravtsov, A. V. Shubin, and E. M. Dianov, “Lasing parameters of ytterbium-doped fibres doped with P2O5 and Al2O3,” Quantum Electron. 34(9), 843–848 (2004).
[Crossref]

Burov, E.

Cadier, B.

Cardinal, T.

Cavani, O.

Chatigny, S.

B. Morasse, S. Chatigny, É. Gagnon, C. Hovington, J.-P. Martin, and J.-P. Sandro, “Low photodarkening single cladding ytterbium fibre amplifier,” Proc. SPIE 6453, 64530H (2007).
[Crossref]

Codemard, C. A.

M. N. Zervas and C. A. Codemard, “High power fiber lasers: a review,” IEEE J. Sel. Top. Quant. 20(5), 0904123 (2014).
[Crossref]

Dai, N.

Dai, N. L.

Dianov, E. M.

M. A. Mel’kumov, I. A. Bufetov, K. S. Kravtsov, A. V. Shubin, and E. M. Dianov, “Lasing parameters of ytterbium-doped fibres doped with P2O5 and Al2O3,” Quantum Electron. 34(9), 843–848 (2004).
[Crossref]

Engholm, M.

S. Rydberg and M. Engholm, “Experimental evidence for the formation of divalent ytterbium in the photodarkening process of Yb-doped fiber lasers,” Opt. Express 21(6), 6681–6688 (2013).
[Crossref] [PubMed]

M. Engholm, P. Jelger, F. Laurell, and L. Norin, “Improved photodarkening resistivity in ytterbium-doped fiber lasers by cerium codoping,” Opt. Lett. 34(8), 1285–1287 (2009).
[Crossref] [PubMed]

M. Engholm and L. Norin, “The role of charge transfer processes for the induced optical losses in ytterbium doped fiber lasers,” Proc. SPIE 7195, 71950T (2009).
[Crossref]

M. Engholm and L. Norin, “Reduction of photodarkening in Yb/Al-doped fiber lasers,” Proc. SPIE 6873, 68731E (2008).
[Crossref]

Ermeneux, S.

Ferin, A.

V. Fomin, V. Gapontsev, E. Shcherbakov, A. Abramov, A. Ferin, and D. Mochalov, “100 kW CW fiber laser for industrial applications,” IEEE International Conference on Laser Optics, 1 (2014).
[Crossref]

Fiebrandt, J.

Fomin, V.

V. Fomin, V. Gapontsev, E. Shcherbakov, A. Abramov, A. Ferin, and D. Mochalov, “100 kW CW fiber laser for industrial applications,” IEEE International Conference on Laser Optics, 1 (2014).
[Crossref]

Fujimoto, Y.

S. Sugiyama, Y. Fujimoto, M. Murakami, H. Nakano, T. Sato, and H. Shiraga, “Suppression of photo-darkening effect by Ca additive in Yb-doped silica glass fibre,” Electron. Lett. 49(2), 148–149 (2013).
[Crossref]

Gagnon, É.

B. Morasse, S. Chatigny, É. Gagnon, C. Hovington, J.-P. Martin, and J.-P. Sandro, “Low photodarkening single cladding ytterbium fibre amplifier,” Proc. SPIE 6453, 64530H (2007).
[Crossref]

Galvanauskas, A.

C. G. Ye, L. Petit, J. J. Koponen, I.-N. Hu, and A. Galvanauskas, “Short-term and long-term stability in ytterbium-doped high-power fiber lasers and amplifiers,” IEEE J. Sel. Top. Quant. 20(5), 1–12 (2014).

Gapontsev, V.

V. Fomin, V. Gapontsev, E. Shcherbakov, A. Abramov, A. Ferin, and D. Mochalov, “100 kW CW fiber laser for industrial applications,” IEEE International Conference on Laser Optics, 1 (2014).
[Crossref]

Gebavi, H.

Gonnet, C.

Guillen, F.

Guzman Chávez, A. D.

A. D. Guzman Chávez, A. V. Kir’yanov, Y. O. Barmenkov, and N. N. Il’ichev, “Reversible photo-darkening and resonant photo-bleaching of Ytterbium-doped silica fiber at in-core 977-nm and 543-nm irradiation,” Laser Phys. Lett. 4(10), 734–739 (2007).
[Crossref]

Hanna, D. C.

R. Paschotta, J. Nilsson, A. C. Tropper, and D. C. Hanna, “Ytterbium-doped fiber amplifiers,” IEEE J. Quantum Electron. 33(7), 1049–1056 (1997).
[Crossref]

Hoffman, H. J.

Honkanen, S.

Hovington, C.

B. Morasse, S. Chatigny, É. Gagnon, C. Hovington, J.-P. Martin, and J.-P. Sandro, “Low photodarkening single cladding ytterbium fibre amplifier,” Proc. SPIE 6453, 64530H (2007).
[Crossref]

Hu, I.-N.

C. G. Ye, L. Petit, J. J. Koponen, I.-N. Hu, and A. Galvanauskas, “Short-term and long-term stability in ytterbium-doped high-power fiber lasers and amplifiers,” IEEE J. Sel. Top. Quant. 20(5), 1–12 (2014).

Il’ichev, N. N.

A. D. Guzman Chávez, A. V. Kir’yanov, Y. O. Barmenkov, and N. N. Il’ichev, “Reversible photo-darkening and resonant photo-bleaching of Ytterbium-doped silica fiber at in-core 977-nm and 543-nm irradiation,” Laser Phys. Lett. 4(10), 734–739 (2007).
[Crossref]

Jacquier, B.

Jäger, M.

Jauregui, C.

Jelger, P.

Jetschke, S.

S. Jetschke, S. Unger, A. Schwuchow, M. Leich, and M. Jäger, “Role of Ce in Yb/Al laser fibers: prevention of photodarkening and thermal effects,” Opt. Express 24(12), 13009–13022 (2016).
[Crossref] [PubMed]

S. Jetschke, S. Unger, A. Schwuchow, M. Leich, J. Fiebrandt, M. Jäger, and J. Kirchhof, “Evidence of Tm impact in low-photodarkening Yb-doped fibers,” Opt. Express 21(6), 7590–7598 (2013).
[Crossref] [PubMed]

S. Jetschke, S. Unger, M. Leich, and J. Kirchhof, “Photodarkening kinetics as a function of Yb concentration and the role of Al codoping,” Appl. Opt. 51(32), 7758–7764 (2012).
[Crossref] [PubMed]

S. Jetschke and U. Röpke, “Power-law dependence of the photodarkening rate constant on the inversion in Yb doped fibers,” Opt. Lett. 34(1), 109–111 (2009).
[Crossref] [PubMed]

S. Jetschke, S. Unger, A. Schwuchow, M. Leich, and J. Kirchhof, “Efficient Yb laser fibers with low photodarkening by optimization of the core composition,” Opt. Express 16(20), 15540–15545 (2008).
[Crossref] [PubMed]

S. Unger, A. Schwuchow, S. Jetschke, V. Reichel, A. Scheffel, and J. Kirchhof, “Optical properties of Yb-doped laser fibers in dependence on codopants and preparation conditions,” Proc. SPIE 6890, 689016 (2008).
[Crossref]

S. Jetschke, S. Unger, U. Röpke, and J. Kirchhof, “Photodarkening in Yb doped fibers: experimental evidence of equilibrium states depending on the pump power,” Opt. Express 15(22), 14838–14843 (2007).
[Crossref] [PubMed]

Jurdyc, A. M.

Kir’yanov, A. V.

A. D. Guzman Chávez, A. V. Kir’yanov, Y. O. Barmenkov, and N. N. Il’ichev, “Reversible photo-darkening and resonant photo-bleaching of Ytterbium-doped silica fiber at in-core 977-nm and 543-nm irradiation,” Laser Phys. Lett. 4(10), 734–739 (2007).
[Crossref]

Kirchhof, J.

Klotzback, U.

R. Piccoli, T. Robin, D. Méchin, T. Brand, U. Klotzback, and S. Taccheo, “Effective mitigation of photodarkening in Yb-doped lasers based on Al-silicate using UV/visible light,” Proc. SPIE 8961, 896121 (2014).
[Crossref]

Koplow, J. P.

Koponen, J. J.

C. G. Ye, L. Petit, J. J. Koponen, I.-N. Hu, and A. Galvanauskas, “Short-term and long-term stability in ytterbium-doped high-power fiber lasers and amplifiers,” IEEE J. Sel. Top. Quant. 20(5), 1–12 (2014).

J. J. Koponen, M. J. Söderlund, H. J. Hoffman, and S. K. Tammela, “Measuring photodarkening from single-mode ytterbium doped silica fibers,” Opt. Express 14(24), 11539–11544 (2006).
[Crossref] [PubMed]

Kravtsov, K. S.

M. A. Mel’kumov, I. A. Bufetov, K. S. Kravtsov, A. V. Shubin, and E. M. Dianov, “Lasing parameters of ytterbium-doped fibres doped with P2O5 and Al2O3,” Quantum Electron. 34(9), 843–848 (2004).
[Crossref]

Lablonde, L.

Laurell, F.

Leich, M.

Li, H.

Li, H. Q.

Li, J.

Li, J. M.

Li, J. Y.

Li, M.

Liao, L.

Limpert, J.

Liu, Y.

Manek-Hönninger, I.

Martin, J.-P.

B. Morasse, S. Chatigny, É. Gagnon, C. Hovington, J.-P. Martin, and J.-P. Sandro, “Low photodarkening single cladding ytterbium fibre amplifier,” Proc. SPIE 6453, 64530H (2007).
[Crossref]

Mattsson, K. E.

Méchin, D.

R. Piccoli, T. Robin, D. Méchin, T. Brand, U. Klotzback, and S. Taccheo, “Effective mitigation of photodarkening in Yb-doped lasers based on Al-silicate using UV/visible light,” Proc. SPIE 8961, 896121 (2014).
[Crossref]

H. Gebavi, S. Taccheo, L. Lablonde, B. Cadier, T. Robin, D. Méchin, and D. Tregoat, “Mitigation of photodarkening phenomenon in fiber lasers by 633 nm light exposure,” Opt. Lett. 38(2), 196–198 (2013).
[Crossref] [PubMed]

Mel’kumov, M. A.

M. A. Mel’kumov, I. A. Bufetov, K. S. Kravtsov, A. V. Shubin, and E. M. Dianov, “Lasing parameters of ytterbium-doped fibres doped with P2O5 and Al2O3,” Quantum Electron. 34(9), 843–848 (2004).
[Crossref]

Mochalov, D.

V. Fomin, V. Gapontsev, E. Shcherbakov, A. Abramov, A. Ferin, and D. Mochalov, “100 kW CW fiber laser for industrial applications,” IEEE International Conference on Laser Optics, 1 (2014).
[Crossref]

Modsching, N.

Montiel i Ponsoda, J. J.

Morasse, B.

B. Morasse, S. Chatigny, É. Gagnon, C. Hovington, J.-P. Martin, and J.-P. Sandro, “Low photodarkening single cladding ytterbium fibre amplifier,” Proc. SPIE 6453, 64530H (2007).
[Crossref]

Murakami, M.

S. Sugiyama, Y. Fujimoto, M. Murakami, H. Nakano, T. Sato, and H. Shiraga, “Suppression of photo-darkening effect by Ca additive in Yb-doped silica glass fibre,” Electron. Lett. 49(2), 148–149 (2013).
[Crossref]

Nakano, H.

S. Sugiyama, Y. Fujimoto, M. Murakami, H. Nakano, T. Sato, and H. Shiraga, “Suppression of photo-darkening effect by Ca additive in Yb-doped silica glass fibre,” Electron. Lett. 49(2), 148–149 (2013).
[Crossref]

Nilsson, J.

Norin, L.

M. Engholm and L. Norin, “The role of charge transfer processes for the induced optical losses in ytterbium doped fiber lasers,” Proc. SPIE 7195, 71950T (2009).
[Crossref]

M. Engholm, P. Jelger, F. Laurell, and L. Norin, “Improved photodarkening resistivity in ytterbium-doped fiber lasers by cerium codoping,” Opt. Lett. 34(8), 1285–1287 (2009).
[Crossref] [PubMed]

M. Engholm and L. Norin, “Reduction of photodarkening in Yb/Al-doped fiber lasers,” Proc. SPIE 6873, 68731E (2008).
[Crossref]

Otto, H.-J.

Paschotta, R.

R. Paschotta, J. Nilsson, A. C. Tropper, and D. C. Hanna, “Ytterbium-doped fiber amplifiers,” IEEE J. Quantum Electron. 33(7), 1049–1056 (1997).
[Crossref]

Pastouret, A.

Payne, D.

Payne, D. N.

J. Nilsson and D. N. Payne, “Physics. High-power fiber lasers,” Science 332(6032), 921–922 (2011).
[Crossref] [PubMed]

Peng, J.

Peng, J. G.

Peretti, R.

Petit, L.

C. G. Ye, L. Petit, J. J. Koponen, I.-N. Hu, and A. Galvanauskas, “Short-term and long-term stability in ytterbium-doped high-power fiber lasers and amplifiers,” IEEE J. Sel. Top. Quant. 20(5), 1–12 (2014).

Piccoli, R.

R. Piccoli, T. Robin, D. Méchin, T. Brand, U. Klotzback, and S. Taccheo, “Effective mitigation of photodarkening in Yb-doped lasers based on Al-silicate using UV/visible light,” Proc. SPIE 8961, 896121 (2014).
[Crossref]

Podgorski, M.

Reichel, V.

S. Unger, A. Schwuchow, S. Jetschke, V. Reichel, A. Scheffel, and J. Kirchhof, “Optical properties of Yb-doped laser fibers in dependence on codopants and preparation conditions,” Proc. SPIE 6890, 689016 (2008).
[Crossref]

Robin, T.

R. Piccoli, T. Robin, D. Méchin, T. Brand, U. Klotzback, and S. Taccheo, “Effective mitigation of photodarkening in Yb-doped lasers based on Al-silicate using UV/visible light,” Proc. SPIE 8961, 896121 (2014).
[Crossref]

H. Gebavi, S. Taccheo, L. Lablonde, B. Cadier, T. Robin, D. Méchin, and D. Tregoat, “Mitigation of photodarkening phenomenon in fiber lasers by 633 nm light exposure,” Opt. Lett. 38(2), 196–198 (2013).
[Crossref] [PubMed]

Röpke, U.

Rydberg, S.

Sahu, J. K.

Salin, F.

Sandro, J.-P.

B. Morasse, S. Chatigny, É. Gagnon, C. Hovington, J.-P. Martin, and J.-P. Sandro, “Low photodarkening single cladding ytterbium fibre amplifier,” Proc. SPIE 6453, 64530H (2007).
[Crossref]

Sato, T.

S. Sugiyama, Y. Fujimoto, M. Murakami, H. Nakano, T. Sato, and H. Shiraga, “Suppression of photo-darkening effect by Ca additive in Yb-doped silica glass fibre,” Electron. Lett. 49(2), 148–149 (2013).
[Crossref]

Scheffel, A.

S. Unger, A. Schwuchow, S. Jetschke, V. Reichel, A. Scheffel, and J. Kirchhof, “Optical properties of Yb-doped laser fibers in dependence on codopants and preparation conditions,” Proc. SPIE 6890, 689016 (2008).
[Crossref]

Schwuchow, A.

Shcherbakov, E.

V. Fomin, V. Gapontsev, E. Shcherbakov, A. Abramov, A. Ferin, and D. Mochalov, “100 kW CW fiber laser for industrial applications,” IEEE International Conference on Laser Optics, 1 (2014).
[Crossref]

Shiraga, H.

S. Sugiyama, Y. Fujimoto, M. Murakami, H. Nakano, T. Sato, and H. Shiraga, “Suppression of photo-darkening effect by Ca additive in Yb-doped silica glass fibre,” Electron. Lett. 49(2), 148–149 (2013).
[Crossref]

Shubin, A. V.

M. A. Mel’kumov, I. A. Bufetov, K. S. Kravtsov, A. V. Shubin, and E. M. Dianov, “Lasing parameters of ytterbium-doped fibres doped with P2O5 and Al2O3,” Quantum Electron. 34(9), 843–848 (2004).
[Crossref]

Söderlund, M. J.

Sones, C.

Sugiyama, S.

S. Sugiyama, Y. Fujimoto, M. Murakami, H. Nakano, T. Sato, and H. Shiraga, “Suppression of photo-darkening effect by Ca additive in Yb-doped silica glass fibre,” Electron. Lett. 49(2), 148–149 (2013).
[Crossref]

Taccheo, S.

R. Piccoli, T. Robin, D. Méchin, T. Brand, U. Klotzback, and S. Taccheo, “Effective mitigation of photodarkening in Yb-doped lasers based on Al-silicate using UV/visible light,” Proc. SPIE 8961, 896121 (2014).
[Crossref]

H. Gebavi, S. Taccheo, L. Lablonde, B. Cadier, T. Robin, D. Méchin, and D. Tregoat, “Mitigation of photodarkening phenomenon in fiber lasers by 633 nm light exposure,” Opt. Lett. 38(2), 196–198 (2013).
[Crossref] [PubMed]

Tammela, S. K.

Tregoat, D.

Tropper, A. C.

R. Paschotta, J. Nilsson, A. C. Tropper, and D. C. Hanna, “Ytterbium-doped fiber amplifiers,” IEEE J. Quantum Electron. 33(7), 1049–1056 (1997).
[Crossref]

Tünnermann, A.

Unger, S.

Wang, Y. B.

Xing, Y. B.

Yang, L.

Yang, L. Y.

Ye, C. G.

C. G. Ye, L. Petit, J. J. Koponen, I.-N. Hu, and A. Galvanauskas, “Short-term and long-term stability in ytterbium-doped high-power fiber lasers and amplifiers,” IEEE J. Sel. Top. Quant. 20(5), 1–12 (2014).

Yoo, S.

Zervas, M. N.

M. N. Zervas and C. A. Codemard, “High power fiber lasers: a review,” IEEE J. Sel. Top. Quant. 20(5), 0904123 (2014).
[Crossref]

Zhao, N.

Appl. Opt. (1)

Electron. Lett. (1)

S. Sugiyama, Y. Fujimoto, M. Murakami, H. Nakano, T. Sato, and H. Shiraga, “Suppression of photo-darkening effect by Ca additive in Yb-doped silica glass fibre,” Electron. Lett. 49(2), 148–149 (2013).
[Crossref]

IEEE J. Quantum Electron. (1)

R. Paschotta, J. Nilsson, A. C. Tropper, and D. C. Hanna, “Ytterbium-doped fiber amplifiers,” IEEE J. Quantum Electron. 33(7), 1049–1056 (1997).
[Crossref]

IEEE J. Sel. Top. Quant. (2)

M. N. Zervas and C. A. Codemard, “High power fiber lasers: a review,” IEEE J. Sel. Top. Quant. 20(5), 0904123 (2014).
[Crossref]

C. G. Ye, L. Petit, J. J. Koponen, I.-N. Hu, and A. Galvanauskas, “Short-term and long-term stability in ytterbium-doped high-power fiber lasers and amplifiers,” IEEE J. Sel. Top. Quant. 20(5), 1–12 (2014).

Laser Phys. Lett. (1)

A. D. Guzman Chávez, A. V. Kir’yanov, Y. O. Barmenkov, and N. N. Il’ichev, “Reversible photo-darkening and resonant photo-bleaching of Ytterbium-doped silica fiber at in-core 977-nm and 543-nm irradiation,” Laser Phys. Lett. 4(10), 734–739 (2007).
[Crossref]

Opt. Express (12)

I. Manek-Hönninger, J. Boullet, T. Cardinal, F. Guillen, S. Ermeneux, M. Podgorski, R. Bello Doua, and F. Salin, “Photodarkening and photobleaching of an ytterbium-doped silica double-clad LMA fiber,” Opt. Express 15(4), 1606–1611 (2007).
[Crossref] [PubMed]

N. Zhao, Y. Liu, M. Li, J. Li, J. Peng, L. Yang, N. Dai, H. Li, and J. Li, “Mitigation of photodarkening effect in Yb-doped fiber through Na+ ions doping,” Opt. Express 25(15), 18191–18196 (2017).
[Crossref] [PubMed]

N. Zhao, Y. B. Xing, J. M. Li, L. Liao, Y. B. Wang, J. G. Peng, L. Y. Yang, N. L. Dai, H. Q. Li, and J. Y. Li, “793 nm pump induced photo-bleaching of photo-darkened Yb(3+)-doped fibers,” Opt. Express 23(19), 25272–25278 (2015).
[Crossref] [PubMed]

S. Jetschke, S. Unger, A. Schwuchow, M. Leich, and J. Kirchhof, “Efficient Yb laser fibers with low photodarkening by optimization of the core composition,” Opt. Express 16(20), 15540–15545 (2008).
[Crossref] [PubMed]

J. J. Koponen, M. J. Söderlund, H. J. Hoffman, and S. K. Tammela, “Measuring photodarkening from single-mode ytterbium doped silica fibers,” Opt. Express 14(24), 11539–11544 (2006).
[Crossref] [PubMed]

S. Jetschke, S. Unger, U. Röpke, and J. Kirchhof, “Photodarkening in Yb doped fibers: experimental evidence of equilibrium states depending on the pump power,” Opt. Express 15(22), 14838–14843 (2007).
[Crossref] [PubMed]

H.-J. Otto, N. Modsching, C. Jauregui, J. Limpert, and A. Tünnermann, “Impact of photodarkening on the mode instability threshold,” Opt. Express 23(12), 15265–15277 (2015).
[Crossref] [PubMed]

K. E. Mattsson, “Photo darkening of rare earth doped silica,” Opt. Express 19(21), 19797–19812 (2011).
[Crossref] [PubMed]

S. Jetschke, S. Unger, A. Schwuchow, M. Leich, and M. Jäger, “Role of Ce in Yb/Al laser fibers: prevention of photodarkening and thermal effects,” Opt. Express 24(12), 13009–13022 (2016).
[Crossref] [PubMed]

S. Rydberg and M. Engholm, “Experimental evidence for the formation of divalent ytterbium in the photodarkening process of Yb-doped fiber lasers,” Opt. Express 21(6), 6681–6688 (2013).
[Crossref] [PubMed]

R. Peretti, A. M. Jurdyc, B. Jacquier, C. Gonnet, A. Pastouret, E. Burov, and O. Cavani, “How do traces of thulium explain photodarkening in Yb doped fibers?” Opt. Express 18(19), 20455–20460 (2010).
[Crossref] [PubMed]

S. Jetschke, S. Unger, A. Schwuchow, M. Leich, J. Fiebrandt, M. Jäger, and J. Kirchhof, “Evidence of Tm impact in low-photodarkening Yb-doped fibers,” Opt. Express 21(6), 7590–7598 (2013).
[Crossref] [PubMed]

Opt. Lett. (6)

Proc. SPIE (5)

R. Piccoli, T. Robin, D. Méchin, T. Brand, U. Klotzback, and S. Taccheo, “Effective mitigation of photodarkening in Yb-doped lasers based on Al-silicate using UV/visible light,” Proc. SPIE 8961, 896121 (2014).
[Crossref]

M. Engholm and L. Norin, “Reduction of photodarkening in Yb/Al-doped fiber lasers,” Proc. SPIE 6873, 68731E (2008).
[Crossref]

S. Unger, A. Schwuchow, S. Jetschke, V. Reichel, A. Scheffel, and J. Kirchhof, “Optical properties of Yb-doped laser fibers in dependence on codopants and preparation conditions,” Proc. SPIE 6890, 689016 (2008).
[Crossref]

B. Morasse, S. Chatigny, É. Gagnon, C. Hovington, J.-P. Martin, and J.-P. Sandro, “Low photodarkening single cladding ytterbium fibre amplifier,” Proc. SPIE 6453, 64530H (2007).
[Crossref]

M. Engholm and L. Norin, “The role of charge transfer processes for the induced optical losses in ytterbium doped fiber lasers,” Proc. SPIE 7195, 71950T (2009).
[Crossref]

Quantum Electron. (1)

M. A. Mel’kumov, I. A. Bufetov, K. S. Kravtsov, A. V. Shubin, and E. M. Dianov, “Lasing parameters of ytterbium-doped fibres doped with P2O5 and Al2O3,” Quantum Electron. 34(9), 843–848 (2004).
[Crossref]

Science (1)

J. Nilsson and D. N. Payne, “Physics. High-power fiber lasers,” Science 332(6032), 921–922 (2011).
[Crossref] [PubMed]

Other (3)

B. Shiner, “The impact of fiber laser technology on the world wide material processing market,” CLEO: Applications and Technology, AF2J. 1 (2013).

V. Fomin, V. Gapontsev, E. Shcherbakov, A. Abramov, A. Ferin, and D. Mochalov, “100 kW CW fiber laser for industrial applications,” IEEE International Conference on Laser Optics, 1 (2014).
[Crossref]

J. Jasapara, M. Andrejco, D. DiGiovanni, and R. Windeler, “Effect of heat and H2 gas on the photo-darkening of Yb3+ fibers,” Conference on Lasers and Electro-Optics, CTuQ5 (2006).

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Figures (5)

Fig. 1
Fig. 1 PD excess loss and fitting curve at 633, 702, 810, and 1041 nm of (a) Yb/Al [19]; (b)Yb/Al/Li fiber.
Fig. 2
Fig. 2 Laser output power dependence on absorbed pump power of (a) Yb/Al [19]; (b) Yb/Al/Li fiber.
Fig. 3
Fig. 3 The PD-induced excess loss of Yb/Al, Yb/Al/Li, and Yb/Al/Na [19] fiber at (a) 633nm, (b) 702nm, (c) 810nm, (d) 1041nm.
Fig. 4
Fig. 4 The slope efficiency of Yb/Al, Yb/Al/Li, and Yb/Al/Na [19] fiber.
Fig. 5
Fig. 5 The PD-induced excess loss of six fibers at 702 nm.

Tables (2)

Tables Icon

Table 1 Fiber Parameters

Tables Icon

Table 2 Parameters of Li Co-doping Fibers