Mitigation of photodarkening effect in Yb-doped fiber through Na⁺ ions doping

A. Dhar, S. Das, P. H. Reddy, S. H. Siddiki, D. Dutta, M. Pal, A. V. Kir’yanov, and M. C. Paul, “Multielement (P-Yb-Zr-Ce-Al-Ca) fiber for moderate-power laser application with enhanced photodarkening resistivity,” Phys. Status Solidi., A Appl. Mater. Sci. 214(6), 1600655 (2017).
[Crossref]

Y. Sakaguchi, Y. Fujimoto, M. Masuda, N. Miyanaga, and H. Nakano, “Suppression of photo-darkening effect in Yb-doped silica glass fiber by co-doping of group 2 element,” J. Non-Cryst. Solids 440, 85–89 (2016).
[Crossref]

N. Zhao, Y. Wang, J. Li, C. Liu, J. Peng, H. Li, N. Dai, L. Yang, and J. Li, “Investigation of cerium influence on photo-darkening and photo-bleaching in Yb-doped fibers,” Appl. Phys., A Mater. Sci. Process. 122(2), 1–5 (2016).
[Crossref]

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]

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 Yb3+-doped fibers,” Opt. Express 23(19), 25272–25278 (2015).
[Crossref] [PubMed]

R. Piccoli, T. Robin, T. Brand, U. Klotzbach, and S. Taccheo, “Effective photodarkening suppression in Yb-doped fiber lasers by visible light injection,” Opt. Express 22(7), 7638–7643 (2014).
[Crossref] [PubMed]

R. Piccoli, H. Gebavi, L. Lablonde, B. Cadier, T. Robin, A. Monteville, O. Le Goffic, D. Landais, D. Méchin, D. Milanese, T. Brand, and S. Taccheo, “Evidence of photodarkening mitigation in Yb-doped fiber lasers by low power 405 nm radiation,” IEEE Photonics Technol. Lett. 26(1), 50–53 (2014).
[Crossref]

H. Gebavi, S. Taccheo, D. Tregoat, A. Monteville, and T. Robin, “Photobleaching of photodarkening in ytterbium doped aluminosilicate fibers with 633 nm irradiation,” Opt. Mater. Express 2(9), 1286–1291 (2012).
[Crossref]

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

D. J. Richardson, J. Nilsson, and W. A. Clarkson, “High power fiber lasers: current status and future perspectives [Invited],” J. Opt. Soc. Am. B 27(11), B63–B92 (2010).
[Crossref]

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]

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. J. Söderlund, J. J. Montiel i Ponsoda, J. P. Koplow, and S. Honkanen, “Thermal bleaching of photodarkening-induced loss in ytterbium-doped fibers,” Opt. Lett. 34(17), 2637–2639 (2009).
[Crossref] [PubMed]

B. W. Liu, M. L. Hu, X. H. Fang, Y. Z. Wu, Y. J. Song, L. Chai, C. Y. Wang, and A. M. Zheltikov, “High-power wavelength-tunable photonic-crystal-fiber-based oscillator-amplifier-frequency-shifter femtosecond laser system and its applications for material microprocessing,” Laser Phys. Lett. 6(1), 44–48 (2009).
[Crossref]

S. Jetschke, U. Röpke, S. Unger, and J. Kirchhof, “Characterization of photodarkening processes in Yb doped fibers,” Proc. SPIE 7195, 71952B (2009).
[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]

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]

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

S. Yoo, C. Basu, A. J. Boyland, C. Sones, J. Nilsson, J. K. Sahu, and D. Payne, “Photodarkening in Yb-doped aluminosilicate fibers induced by 488 nm irradiation,” Opt. Lett. 32(12), 1626–1628 (2007).
[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]

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]

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]

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]

R. Selves, J. K. Sahu, L. B. Fu, J. N. Jang, J. Nilsson, A. B. Grudinin, K. H. Ylä-Jarkko, S. A. Alam, P. W. Turner, and J. Moore, “High-power, low-noise, Yb-doped, cladding-pumped, three-level fiber sources at 980 nm,” Opt. Lett. 28(13), 1093–1095 (2003).
[Crossref] [PubMed]

J. Limpert, T. Schreiber, T. Clausnitzer, K. Zöllner, H. Fuchs, E. Kley, H. Zellmer, and A. Tünnermann, “High-power femtosecond Yb-doped fiber amplifier,” Opt. Express 10(14), 628–638 (2002).
[Crossref] [PubMed]

A. Hideur, T. Chartier, C. Özkul, and F. Sanchez, “All-fiber tunable ytterbium-doped double-clad fiber ring laser,” Opt. Lett. 26(14), 1054–1056 (2001).
[Crossref] [PubMed]

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(5–6), 375–378 (1997).
[Crossref]

K. Arai, H. Namikawa, K. Kumata, T. Honda, Y. Ishii, and T. Handa, “Aluminum or phosphorus co-doping effects on the fluorescence and structural properties of neodymium-doped silica glass,” J. Appl. Phys. 59(10), 3430–3436 (1986).
[Crossref]

R. Selves, J. K. Sahu, L. B. Fu, J. N. Jang, J. Nilsson, A. B. Grudinin, K. H. Ylä-Jarkko, S. A. Alam, P. W. Turner, and J. Moore, “High-power, low-noise, Yb-doped, cladding-pumped, three-level fiber sources at 980 nm,” Opt. Lett. 28(13), 1093–1095 (2003).
[Crossref] [PubMed]

K. Arai, H. Namikawa, K. Kumata, T. Honda, Y. Ishii, and T. Handa, “Aluminum or phosphorus co-doping effects on the fluorescence and structural properties of neodymium-doped silica glass,” J. Appl. Phys. 59(10), 3430–3436 (1986).
[Crossref]

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(5–6), 375–378 (1997).
[Crossref]

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]

S. Yoo, C. Basu, A. J. Boyland, C. Sones, J. Nilsson, J. K. Sahu, and D. Payne, “Photodarkening in Yb-doped aluminosilicate fibers induced by 488 nm irradiation,” Opt. Lett. 32(12), 1626–1628 (2007).
[Crossref] [PubMed]

S. Yoo, C. Basu, A. J. Boyland, C. Sones, J. Nilsson, J. K. Sahu, and D. Payne, “Photodarkening in Yb-doped aluminosilicate fibers induced by 488 nm irradiation,” Opt. Lett. 32(12), 1626–1628 (2007).
[Crossref] [PubMed]

R. Piccoli, T. Robin, T. Brand, U. Klotzbach, and S. Taccheo, “Effective photodarkening suppression in Yb-doped fiber lasers by visible light injection,” Opt. Express 22(7), 7638–7643 (2014).
[Crossref] [PubMed]

R. Piccoli, H. Gebavi, L. Lablonde, B. Cadier, T. Robin, A. Monteville, O. Le Goffic, D. Landais, D. Méchin, D. Milanese, T. Brand, and S. Taccheo, “Evidence of photodarkening mitigation in Yb-doped fiber lasers by low power 405 nm radiation,” IEEE Photonics Technol. Lett. 26(1), 50–53 (2014).
[Crossref]

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]

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]

R. Piccoli, H. Gebavi, L. Lablonde, B. Cadier, T. Robin, A. Monteville, O. Le Goffic, D. Landais, D. Méchin, D. Milanese, T. Brand, and S. Taccheo, “Evidence of photodarkening mitigation in Yb-doped fiber lasers by low power 405 nm radiation,” IEEE Photonics Technol. Lett. 26(1), 50–53 (2014).
[Crossref]

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(5–6), 375–378 (1997).
[Crossref]

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]

B. W. Liu, M. L. Hu, X. H. Fang, Y. Z. Wu, Y. J. Song, L. Chai, C. Y. Wang, and A. M. Zheltikov, “High-power wavelength-tunable photonic-crystal-fiber-based oscillator-amplifier-frequency-shifter femtosecond laser system and its applications for material microprocessing,” Laser Phys. Lett. 6(1), 44–48 (2009).
[Crossref]

A. Hideur, T. Chartier, C. Özkul, and F. Sanchez, “All-fiber tunable ytterbium-doped double-clad fiber ring laser,” Opt. Lett. 26(14), 1054–1056 (2001).
[Crossref] [PubMed]

D. J. Richardson, J. Nilsson, and W. A. Clarkson, “High power fiber lasers: current status and future perspectives [Invited],” J. Opt. Soc. Am. B 27(11), B63–B92 (2010).
[Crossref]

J. Limpert, T. Schreiber, T. Clausnitzer, K. Zöllner, H. Fuchs, E. Kley, H. Zellmer, and A. Tünnermann, “High-power femtosecond Yb-doped fiber amplifier,” Opt. Express 10(14), 628–638 (2002).
[Crossref] [PubMed]

N. Zhao, Y. Wang, J. Li, C. Liu, J. Peng, H. Li, N. Dai, L. Yang, and J. Li, “Investigation of cerium influence on photo-darkening and photo-bleaching in Yb-doped fibers,” Appl. Phys., A Mater. Sci. Process. 122(2), 1–5 (2016).
[Crossref]

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 Yb3+-doped fibers,” Opt. Express 23(19), 25272–25278 (2015).
[Crossref] [PubMed]

A. Dhar, S. Das, P. H. Reddy, S. H. Siddiki, D. Dutta, M. Pal, A. V. Kir’yanov, and M. C. Paul, “Multielement (P-Yb-Zr-Ce-Al-Ca) fiber for moderate-power laser application with enhanced photodarkening resistivity,” Phys. Status Solidi., A Appl. Mater. Sci. 214(6), 1600655 (2017).
[Crossref]

A. Dhar, S. Das, P. H. Reddy, S. H. Siddiki, D. Dutta, M. Pal, A. V. Kir’yanov, and M. C. Paul, “Multielement (P-Yb-Zr-Ce-Al-Ca) fiber for moderate-power laser application with enhanced photodarkening resistivity,” Phys. Status Solidi., A Appl. Mater. Sci. 214(6), 1600655 (2017).
[Crossref]

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]

A. Dhar, S. Das, P. H. Reddy, S. H. Siddiki, D. Dutta, M. Pal, A. V. Kir’yanov, and M. C. Paul, “Multielement (P-Yb-Zr-Ce-Al-Ca) fiber for moderate-power laser application with enhanced photodarkening resistivity,” Phys. Status Solidi., A Appl. Mater. Sci. 214(6), 1600655 (2017).
[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]

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]

B. W. Liu, M. L. Hu, X. H. Fang, Y. Z. Wu, Y. J. Song, L. Chai, C. Y. Wang, and A. M. Zheltikov, “High-power wavelength-tunable photonic-crystal-fiber-based oscillator-amplifier-frequency-shifter femtosecond laser system and its applications for material microprocessing,” Laser Phys. Lett. 6(1), 44–48 (2009).
[Crossref]

R. Selves, J. K. Sahu, L. B. Fu, J. N. Jang, J. Nilsson, A. B. Grudinin, K. H. Ylä-Jarkko, S. A. Alam, P. W. Turner, and J. Moore, “High-power, low-noise, Yb-doped, cladding-pumped, three-level fiber sources at 980 nm,” Opt. Lett. 28(13), 1093–1095 (2003).
[Crossref] [PubMed]

J. Limpert, T. Schreiber, T. Clausnitzer, K. Zöllner, H. Fuchs, E. Kley, H. Zellmer, and A. Tünnermann, “High-power femtosecond Yb-doped fiber amplifier,” Opt. Express 10(14), 628–638 (2002).
[Crossref] [PubMed]

Y. Sakaguchi, Y. Fujimoto, M. Masuda, N. Miyanaga, and H. Nakano, “Suppression of photo-darkening effect in Yb-doped silica glass fiber by co-doping of group 2 element,” J. Non-Cryst. Solids 440, 85–89 (2016).
[Crossref]

R. Piccoli, H. Gebavi, L. Lablonde, B. Cadier, T. Robin, A. Monteville, O. Le Goffic, D. Landais, D. Méchin, D. Milanese, T. Brand, and S. Taccheo, “Evidence of photodarkening mitigation in Yb-doped fiber lasers by low power 405 nm radiation,” IEEE Photonics Technol. Lett. 26(1), 50–53 (2014).
[Crossref]

H. Gebavi, S. Taccheo, D. Tregoat, A. Monteville, and T. Robin, “Photobleaching of photodarkening in ytterbium doped aluminosilicate fibers with 633 nm irradiation,” Opt. Mater. Express 2(9), 1286–1291 (2012).
[Crossref]

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]

R. Selves, J. K. Sahu, L. B. Fu, J. N. Jang, J. Nilsson, A. B. Grudinin, K. H. Ylä-Jarkko, S. A. Alam, P. W. Turner, and J. Moore, “High-power, low-noise, Yb-doped, cladding-pumped, three-level fiber sources at 980 nm,” Opt. Lett. 28(13), 1093–1095 (2003).
[Crossref] [PubMed]

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]

K. Arai, H. Namikawa, K. Kumata, T. Honda, Y. Ishii, and T. Handa, “Aluminum or phosphorus co-doping effects on the fluorescence and structural properties of neodymium-doped silica glass,” J. Appl. Phys. 59(10), 3430–3436 (1986).
[Crossref]

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(5–6), 375–378 (1997).
[Crossref]

A. Hideur, T. Chartier, C. Özkul, and F. Sanchez, “All-fiber tunable ytterbium-doped double-clad fiber ring laser,” Opt. Lett. 26(14), 1054–1056 (2001).
[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]

K. Arai, H. Namikawa, K. Kumata, T. Honda, Y. Ishii, and T. Handa, “Aluminum or phosphorus co-doping effects on the fluorescence and structural properties of neodymium-doped silica glass,” J. Appl. Phys. 59(10), 3430–3436 (1986).
[Crossref]

M. J. Söderlund, J. J. Montiel i Ponsoda, J. P. Koplow, and S. Honkanen, “Thermal bleaching of photodarkening-induced loss in ytterbium-doped fibers,” Opt. Lett. 34(17), 2637–2639 (2009).
[Crossref] [PubMed]

B. W. Liu, M. L. Hu, X. H. Fang, Y. Z. Wu, Y. J. Song, L. Chai, C. Y. Wang, and A. M. Zheltikov, “High-power wavelength-tunable photonic-crystal-fiber-based oscillator-amplifier-frequency-shifter femtosecond laser system and its applications for material microprocessing,” Laser Phys. Lett. 6(1), 44–48 (2009).
[Crossref]

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]

K. Arai, H. Namikawa, K. Kumata, T. Honda, Y. Ishii, and T. Handa, “Aluminum or phosphorus co-doping effects on the fluorescence and structural properties of neodymium-doped silica glass,” J. Appl. Phys. 59(10), 3430–3436 (1986).
[Crossref]

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, 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]

R. Selves, J. K. Sahu, L. B. Fu, J. N. Jang, J. Nilsson, A. B. Grudinin, K. H. Ylä-Jarkko, S. A. Alam, P. W. Turner, and J. Moore, “High-power, low-noise, Yb-doped, cladding-pumped, three-level fiber sources at 980 nm,” Opt. Lett. 28(13), 1093–1095 (2003).
[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]

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 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, U. Röpke, S. Unger, and J. Kirchhof, “Characterization of photodarkening processes in Yb doped fibers,” Proc. SPIE 7195, 71952B (2009).
[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, 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]

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]

A. Dhar, S. Das, P. H. Reddy, S. H. Siddiki, D. Dutta, M. Pal, A. V. Kir’yanov, and M. C. Paul, “Multielement (P-Yb-Zr-Ce-Al-Ca) fiber for moderate-power laser application with enhanced photodarkening resistivity,” Phys. Status Solidi., A Appl. Mater. Sci. 214(6), 1600655 (2017).
[Crossref]

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]

S. Jetschke, U. Röpke, S. Unger, and J. Kirchhof, “Characterization of photodarkening processes in Yb doped fibers,” Proc. SPIE 7195, 71952B (2009).
[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, 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]

J. Limpert, T. Schreiber, T. Clausnitzer, K. Zöllner, H. Fuchs, E. Kley, H. Zellmer, and A. Tünnermann, “High-power femtosecond Yb-doped fiber amplifier,” Opt. Express 10(14), 628–638 (2002).
[Crossref] [PubMed]

R. Piccoli, T. Robin, T. Brand, U. Klotzbach, and S. Taccheo, “Effective photodarkening suppression in Yb-doped fiber lasers by visible light injection,” Opt. Express 22(7), 7638–7643 (2014).
[Crossref] [PubMed]

M. J. Söderlund, J. J. Montiel i Ponsoda, J. P. Koplow, and S. Honkanen, “Thermal bleaching of photodarkening-induced loss in ytterbium-doped fibers,” Opt. Lett. 34(17), 2637–2639 (2009).
[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]

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]

K. Arai, H. Namikawa, K. Kumata, T. Honda, Y. Ishii, and T. Handa, “Aluminum or phosphorus co-doping effects on the fluorescence and structural properties of neodymium-doped silica glass,” J. Appl. Phys. 59(10), 3430–3436 (1986).
[Crossref]

R. Piccoli, H. Gebavi, L. Lablonde, B. Cadier, T. Robin, A. Monteville, O. Le Goffic, D. Landais, D. Méchin, D. Milanese, T. Brand, and S. Taccheo, “Evidence of photodarkening mitigation in Yb-doped fiber lasers by low power 405 nm radiation,” IEEE Photonics Technol. Lett. 26(1), 50–53 (2014).
[Crossref]

R. Piccoli, H. Gebavi, L. Lablonde, B. Cadier, T. Robin, A. Monteville, O. Le Goffic, D. Landais, D. Méchin, D. Milanese, T. Brand, and S. Taccheo, “Evidence of photodarkening mitigation in Yb-doped fiber lasers by low power 405 nm radiation,” IEEE Photonics Technol. Lett. 26(1), 50–53 (2014).
[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]

R. Piccoli, H. Gebavi, L. Lablonde, B. Cadier, T. Robin, A. Monteville, O. Le Goffic, D. Landais, D. Méchin, D. Milanese, T. Brand, and S. Taccheo, “Evidence of photodarkening mitigation in Yb-doped fiber lasers by low power 405 nm radiation,” IEEE Photonics Technol. Lett. 26(1), 50–53 (2014).
[Crossref]

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]

N. Zhao, Y. Wang, J. Li, C. Liu, J. Peng, H. Li, N. Dai, L. Yang, and J. Li, “Investigation of cerium influence on photo-darkening and photo-bleaching in Yb-doped fibers,” Appl. Phys., A Mater. Sci. Process. 122(2), 1–5 (2016).
[Crossref]

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 Yb3+-doped fibers,” Opt. Express 23(19), 25272–25278 (2015).
[Crossref] [PubMed]

N. Zhao, Y. Wang, J. Li, C. Liu, J. Peng, H. Li, N. Dai, L. Yang, and J. Li, “Investigation of cerium influence on photo-darkening and photo-bleaching in Yb-doped fibers,” Appl. Phys., A Mater. Sci. Process. 122(2), 1–5 (2016).
[Crossref]

N. Zhao, Y. Wang, J. Li, C. Liu, J. Peng, H. Li, N. Dai, L. Yang, and J. Li, “Investigation of cerium influence on photo-darkening and photo-bleaching in Yb-doped fibers,” Appl. Phys., A Mater. Sci. Process. 122(2), 1–5 (2016).
[Crossref]

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 Yb3+-doped fibers,” Opt. Express 23(19), 25272–25278 (2015).
[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 Yb3+-doped fibers,” Opt. Express 23(19), 25272–25278 (2015).
[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 Yb3+-doped fibers,” Opt. Express 23(19), 25272–25278 (2015).
[Crossref] [PubMed]

J. Limpert, T. Schreiber, T. Clausnitzer, K. Zöllner, H. Fuchs, E. Kley, H. Zellmer, and A. Tünnermann, “High-power femtosecond Yb-doped fiber amplifier,” Opt. Express 10(14), 628–638 (2002).
[Crossref] [PubMed]

B. W. Liu, M. L. Hu, X. H. Fang, Y. Z. Wu, Y. J. Song, L. Chai, C. Y. Wang, and A. M. Zheltikov, “High-power wavelength-tunable photonic-crystal-fiber-based oscillator-amplifier-frequency-shifter femtosecond laser system and its applications for material microprocessing,” Laser Phys. Lett. 6(1), 44–48 (2009).
[Crossref]

N. Zhao, Y. Wang, J. Li, C. Liu, J. Peng, H. Li, N. Dai, L. Yang, and J. Li, “Investigation of cerium influence on photo-darkening and photo-bleaching in Yb-doped fibers,” Appl. Phys., A Mater. Sci. Process. 122(2), 1–5 (2016).
[Crossref]

Y. Sakaguchi, Y. Fujimoto, M. Masuda, N. Miyanaga, and H. Nakano, “Suppression of photo-darkening effect in Yb-doped silica glass fiber by co-doping of group 2 element,” J. Non-Cryst. Solids 440, 85–89 (2016).
[Crossref]

R. Piccoli, H. Gebavi, L. Lablonde, B. Cadier, T. Robin, A. Monteville, O. Le Goffic, D. Landais, D. Méchin, D. Milanese, T. Brand, and S. Taccheo, “Evidence of photodarkening mitigation in Yb-doped fiber lasers by low power 405 nm radiation,” IEEE Photonics Technol. Lett. 26(1), 50–53 (2014).
[Crossref]

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]

R. Piccoli, H. Gebavi, L. Lablonde, B. Cadier, T. Robin, A. Monteville, O. Le Goffic, D. Landais, D. Méchin, D. Milanese, T. Brand, and S. Taccheo, “Evidence of photodarkening mitigation in Yb-doped fiber lasers by low power 405 nm radiation,” IEEE Photonics Technol. Lett. 26(1), 50–53 (2014).
[Crossref]

Y. Sakaguchi, Y. Fujimoto, M. Masuda, N. Miyanaga, and H. Nakano, “Suppression of photo-darkening effect in Yb-doped silica glass fiber by co-doping of group 2 element,” J. Non-Cryst. Solids 440, 85–89 (2016).
[Crossref]

R. Piccoli, H. Gebavi, L. Lablonde, B. Cadier, T. Robin, A. Monteville, O. Le Goffic, D. Landais, D. Méchin, D. Milanese, T. Brand, and S. Taccheo, “Evidence of photodarkening mitigation in Yb-doped fiber lasers by low power 405 nm radiation,” IEEE Photonics Technol. Lett. 26(1), 50–53 (2014).
[Crossref]

H. Gebavi, S. Taccheo, D. Tregoat, A. Monteville, and T. Robin, “Photobleaching of photodarkening in ytterbium doped aluminosilicate fibers with 633 nm irradiation,” Opt. Mater. Express 2(9), 1286–1291 (2012).
[Crossref]

M. J. Söderlund, J. J. Montiel i Ponsoda, J. P. Koplow, and S. Honkanen, “Thermal bleaching of photodarkening-induced loss in ytterbium-doped fibers,” Opt. Lett. 34(17), 2637–2639 (2009).
[Crossref] [PubMed]

R. Selves, J. K. Sahu, L. B. Fu, J. N. Jang, J. Nilsson, A. B. Grudinin, K. H. Ylä-Jarkko, S. A. Alam, P. W. Turner, and J. Moore, “High-power, low-noise, Yb-doped, cladding-pumped, three-level fiber sources at 980 nm,” Opt. Lett. 28(13), 1093–1095 (2003).
[Crossref] [PubMed]

Y. Sakaguchi, Y. Fujimoto, M. Masuda, N. Miyanaga, and H. Nakano, “Suppression of photo-darkening effect in Yb-doped silica glass fiber by co-doping of group 2 element,” J. Non-Cryst. Solids 440, 85–89 (2016).
[Crossref]

K. Arai, H. Namikawa, K. Kumata, T. Honda, Y. Ishii, and T. Handa, “Aluminum or phosphorus co-doping effects on the fluorescence and structural properties of neodymium-doped silica glass,” J. Appl. Phys. 59(10), 3430–3436 (1986).
[Crossref]

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

D. J. Richardson, J. Nilsson, and W. A. Clarkson, “High power fiber lasers: current status and future perspectives [Invited],” J. Opt. Soc. Am. B 27(11), B63–B92 (2010).
[Crossref]

S. Yoo, C. Basu, A. J. Boyland, C. Sones, J. Nilsson, J. K. Sahu, and D. Payne, “Photodarkening in Yb-doped aluminosilicate fibers induced by 488 nm irradiation,” Opt. Lett. 32(12), 1626–1628 (2007).
[Crossref] [PubMed]

R. Selves, J. K. Sahu, L. B. Fu, J. N. Jang, J. Nilsson, A. B. Grudinin, K. H. Ylä-Jarkko, S. A. Alam, P. W. Turner, and J. Moore, “High-power, low-noise, Yb-doped, cladding-pumped, three-level fiber sources at 980 nm,” Opt. Lett. 28(13), 1093–1095 (2003).
[Crossref] [PubMed]

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(5–6), 375–378 (1997).
[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]

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]

A. Hideur, T. Chartier, C. Özkul, and F. Sanchez, “All-fiber tunable ytterbium-doped double-clad fiber ring laser,” Opt. Lett. 26(14), 1054–1056 (2001).
[Crossref] [PubMed]

A. Dhar, S. Das, P. H. Reddy, S. H. Siddiki, D. Dutta, M. Pal, A. V. Kir’yanov, and M. C. Paul, “Multielement (P-Yb-Zr-Ce-Al-Ca) fiber for moderate-power laser application with enhanced photodarkening resistivity,” Phys. Status Solidi., A Appl. Mater. Sci. 214(6), 1600655 (2017).
[Crossref]

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(5–6), 375–378 (1997).
[Crossref]

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]

A. Dhar, S. Das, P. H. Reddy, S. H. Siddiki, D. Dutta, M. Pal, A. V. Kir’yanov, and M. C. Paul, “Multielement (P-Yb-Zr-Ce-Al-Ca) fiber for moderate-power laser application with enhanced photodarkening resistivity,” Phys. Status Solidi., A Appl. Mater. Sci. 214(6), 1600655 (2017).
[Crossref]

S. Yoo, C. Basu, A. J. Boyland, C. Sones, J. Nilsson, J. K. Sahu, and D. Payne, “Photodarkening in Yb-doped aluminosilicate fibers induced by 488 nm irradiation,” Opt. Lett. 32(12), 1626–1628 (2007).
[Crossref] [PubMed]

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

N. Zhao, Y. Wang, J. Li, C. Liu, J. Peng, H. Li, N. Dai, L. Yang, and J. Li, “Investigation of cerium influence on photo-darkening and photo-bleaching in Yb-doped fibers,” Appl. Phys., A Mater. Sci. Process. 122(2), 1–5 (2016).
[Crossref]

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 Yb3+-doped fibers,” Opt. Express 23(19), 25272–25278 (2015).
[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]

R. Piccoli, H. Gebavi, L. Lablonde, B. Cadier, T. Robin, A. Monteville, O. Le Goffic, D. Landais, D. Méchin, D. Milanese, T. Brand, and S. Taccheo, “Evidence of photodarkening mitigation in Yb-doped fiber lasers by low power 405 nm radiation,” IEEE Photonics Technol. Lett. 26(1), 50–53 (2014).
[Crossref]

R. Piccoli, T. Robin, T. Brand, U. Klotzbach, and S. Taccheo, “Effective photodarkening suppression in Yb-doped fiber lasers by visible light injection,” Opt. Express 22(7), 7638–7643 (2014).
[Crossref] [PubMed]

A. Dhar, S. Das, P. H. Reddy, S. H. Siddiki, D. Dutta, M. Pal, A. V. Kir’yanov, and M. C. Paul, “Multielement (P-Yb-Zr-Ce-Al-Ca) fiber for moderate-power laser application with enhanced photodarkening resistivity,” Phys. Status Solidi., A Appl. Mater. Sci. 214(6), 1600655 (2017).
[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]

D. J. Richardson, J. Nilsson, and W. A. Clarkson, “High power fiber lasers: current status and future perspectives [Invited],” J. Opt. Soc. Am. B 27(11), B63–B92 (2010).
[Crossref]

R. Piccoli, H. Gebavi, L. Lablonde, B. Cadier, T. Robin, A. Monteville, O. Le Goffic, D. Landais, D. Méchin, D. Milanese, T. Brand, and S. Taccheo, “Evidence of photodarkening mitigation in Yb-doped fiber lasers by low power 405 nm radiation,” IEEE Photonics Technol. Lett. 26(1), 50–53 (2014).
[Crossref]

R. Piccoli, T. Robin, T. Brand, U. Klotzbach, and S. Taccheo, “Effective photodarkening suppression in Yb-doped fiber lasers by visible light injection,” Opt. Express 22(7), 7638–7643 (2014).
[Crossref] [PubMed]

H. Gebavi, S. Taccheo, D. Tregoat, A. Monteville, and T. Robin, “Photobleaching of photodarkening in ytterbium doped aluminosilicate fibers with 633 nm irradiation,” Opt. Mater. Express 2(9), 1286–1291 (2012).
[Crossref]

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, U. Röpke, S. Unger, and J. Kirchhof, “Characterization of photodarkening processes in Yb doped fibers,” Proc. SPIE 7195, 71952B (2009).
[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]

S. Yoo, C. Basu, A. J. Boyland, C. Sones, J. Nilsson, J. K. Sahu, and D. Payne, “Photodarkening in Yb-doped aluminosilicate fibers induced by 488 nm irradiation,” Opt. Lett. 32(12), 1626–1628 (2007).
[Crossref] [PubMed]

R. Selves, J. K. Sahu, L. B. Fu, J. N. Jang, J. Nilsson, A. B. Grudinin, K. H. Ylä-Jarkko, S. A. Alam, P. W. Turner, and J. Moore, “High-power, low-noise, Yb-doped, cladding-pumped, three-level fiber sources at 980 nm,” Opt. Lett. 28(13), 1093–1095 (2003).
[Crossref] [PubMed]

Y. Sakaguchi, Y. Fujimoto, M. Masuda, N. Miyanaga, and H. Nakano, “Suppression of photo-darkening effect in Yb-doped silica glass fiber by co-doping of group 2 element,” J. Non-Cryst. Solids 440, 85–89 (2016).
[Crossref]

A. Hideur, T. Chartier, C. Özkul, and F. Sanchez, “All-fiber tunable ytterbium-doped double-clad fiber ring laser,” Opt. Lett. 26(14), 1054–1056 (2001).
[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]

J. Limpert, T. Schreiber, T. Clausnitzer, K. Zöllner, H. Fuchs, E. Kley, H. Zellmer, and A. Tünnermann, “High-power femtosecond Yb-doped fiber amplifier,” Opt. Express 10(14), 628–638 (2002).
[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. 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]

R. Selves, J. K. Sahu, L. B. Fu, J. N. Jang, J. Nilsson, A. B. Grudinin, K. H. Ylä-Jarkko, S. A. Alam, P. W. Turner, and J. Moore, “High-power, low-noise, Yb-doped, cladding-pumped, three-level fiber sources at 980 nm,” Opt. Lett. 28(13), 1093–1095 (2003).
[Crossref] [PubMed]

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]

A. Dhar, S. Das, P. H. Reddy, S. H. Siddiki, D. Dutta, M. Pal, A. V. Kir’yanov, and M. C. Paul, “Multielement (P-Yb-Zr-Ce-Al-Ca) fiber for moderate-power laser application with enhanced photodarkening resistivity,” Phys. Status Solidi., A Appl. Mater. Sci. 214(6), 1600655 (2017).
[Crossref]

M. J. Söderlund, J. J. Montiel i Ponsoda, J. P. Koplow, and S. Honkanen, “Thermal bleaching of photodarkening-induced loss in ytterbium-doped fibers,” Opt. Lett. 34(17), 2637–2639 (2009).
[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. Yoo, C. Basu, A. J. Boyland, C. Sones, J. Nilsson, J. K. Sahu, and D. Payne, “Photodarkening in Yb-doped aluminosilicate fibers induced by 488 nm irradiation,” Opt. Lett. 32(12), 1626–1628 (2007).
[Crossref] [PubMed]

B. W. Liu, M. L. Hu, X. H. Fang, Y. Z. Wu, Y. J. Song, L. Chai, C. Y. Wang, and A. M. Zheltikov, “High-power wavelength-tunable photonic-crystal-fiber-based oscillator-amplifier-frequency-shifter femtosecond laser system and its applications for material microprocessing,” Laser Phys. Lett. 6(1), 44–48 (2009).
[Crossref]

R. Piccoli, H. Gebavi, L. Lablonde, B. Cadier, T. Robin, A. Monteville, O. Le Goffic, D. Landais, D. Méchin, D. Milanese, T. Brand, and S. Taccheo, “Evidence of photodarkening mitigation in Yb-doped fiber lasers by low power 405 nm radiation,” IEEE Photonics Technol. Lett. 26(1), 50–53 (2014).
[Crossref]

R. Piccoli, T. Robin, T. Brand, U. Klotzbach, and S. Taccheo, “Effective photodarkening suppression in Yb-doped fiber lasers by visible light injection,” Opt. Express 22(7), 7638–7643 (2014).
[Crossref] [PubMed]

H. Gebavi, S. Taccheo, D. Tregoat, A. Monteville, and T. Robin, “Photobleaching of photodarkening in ytterbium doped aluminosilicate fibers with 633 nm irradiation,” Opt. Mater. Express 2(9), 1286–1291 (2012).
[Crossref]

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]

H. Gebavi, S. Taccheo, D. Tregoat, A. Monteville, and T. Robin, “Photobleaching of photodarkening in ytterbium doped aluminosilicate fibers with 633 nm irradiation,” Opt. Mater. Express 2(9), 1286–1291 (2012).
[Crossref]

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(5–6), 375–378 (1997).
[Crossref]

J. Limpert, T. Schreiber, T. Clausnitzer, K. Zöllner, H. Fuchs, E. Kley, H. Zellmer, and A. Tünnermann, “High-power femtosecond Yb-doped fiber amplifier,” Opt. Express 10(14), 628–638 (2002).
[Crossref] [PubMed]

R. Selves, J. K. Sahu, L. B. Fu, J. N. Jang, J. Nilsson, A. B. Grudinin, K. H. Ylä-Jarkko, S. A. Alam, P. W. Turner, and J. Moore, “High-power, low-noise, Yb-doped, cladding-pumped, three-level fiber sources at 980 nm,” Opt. Lett. 28(13), 1093–1095 (2003).
[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. Jetschke, U. Röpke, S. Unger, and J. Kirchhof, “Characterization of photodarkening processes in Yb doped fibers,” Proc. SPIE 7195, 71952B (2009).
[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, 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]

B. W. Liu, M. L. Hu, X. H. Fang, Y. Z. Wu, Y. J. Song, L. Chai, C. Y. Wang, and A. M. Zheltikov, “High-power wavelength-tunable photonic-crystal-fiber-based oscillator-amplifier-frequency-shifter femtosecond laser system and its applications for material microprocessing,” Laser Phys. Lett. 6(1), 44–48 (2009).
[Crossref]

N. Zhao, Y. Wang, J. Li, C. Liu, J. Peng, H. Li, N. Dai, L. Yang, and J. Li, “Investigation of cerium influence on photo-darkening and photo-bleaching in Yb-doped fibers,” Appl. Phys., A Mater. Sci. Process. 122(2), 1–5 (2016).
[Crossref]

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 Yb3+-doped fibers,” Opt. Express 23(19), 25272–25278 (2015).
[Crossref] [PubMed]

B. W. Liu, M. L. Hu, X. H. Fang, Y. Z. Wu, Y. J. Song, L. Chai, C. Y. Wang, and A. M. Zheltikov, “High-power wavelength-tunable photonic-crystal-fiber-based oscillator-amplifier-frequency-shifter femtosecond laser system and its applications for material microprocessing,” Laser Phys. Lett. 6(1), 44–48 (2009).
[Crossref]

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 Yb3+-doped fibers,” Opt. Express 23(19), 25272–25278 (2015).
[Crossref] [PubMed]

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