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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 14 — Jul. 7, 2008
  • pp: 10633–10640

Mode-induced transverse photodarkening loss variations in large-mode-area ytterbium doped silica fibers

Mikko J. Söderlund, Joan J. Montiel i Ponsoda, Simo K.T. Tammela, Kalle Ylä-Jarkko, Arto Salokatve, and Seppo Honkanen  »View Author Affiliations


Optics Express, Vol. 16, Issue 14, pp. 10633-10640 (2008)
http://dx.doi.org/10.1364/OE.16.010633


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Abstract

Transverse photodarkening loss variations in an LMA Yb-DCF are experimentally studied. Photodarkening rate depends on inversion, which is affected by the pump induced increase and signal induced depletion of the inversion. In double-clad fibers, intensity distributions of the pump and signal modes and their overlap with the core are significantly different, leading to transverse differences in inversion within the core. Moreover, practical fiber laser configurations aim at generating and preserving only the fundamental transverse-mode thus creating a high contrast in inversion within the core. Therefore, dramatically different rates of photodarkening across the core of the active fiber can be expected. We demonstrate the existence of transverse mode-induced photodarkening loss variations in an LMA Yb-DCF laser and discuss its implications. Composition-related transverse photodarkening loss variations are measured to be negligible in the studied Yb-DCF.

© 2008 Optical Society of America

OCIS Codes
(060.2270) Fiber optics and optical communications : Fiber characterization
(140.3510) Lasers and laser optics : Lasers, fiber
(160.5690) Materials : Rare-earth-doped materials

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: April 29, 2008
Revised Manuscript: June 17, 2008
Manuscript Accepted: June 17, 2008
Published: July 1, 2008

Citation
Mikko J. Söderlund, Joan J. Montiel i Ponsoda, Simo K. T. Tammela, Kalle Ylä-Jarkko, Arto Salokatve, and Seppo Honkanen, "Mode-induced transverse photodarkening loss variations in large-mode-area ytterbium doped silica fibers," Opt. Express 16, 10633-10640 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-14-10633


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References

  1. 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 (1997). [CrossRef]
  2. J. Koponen, M. J. Söderlund, H. J. Hoffmann, and S. K. T. Tammela, "Measuring photodarkening from single-mode ytterbium doped silica fibers," Opt. Express 14, 11539-11544 (2006). [CrossRef] [PubMed]
  3. J. Koponen, M. Söderlund, H. J. Hoffman, D. Kliner, and J. Koplow, "Photodarkening measurements in large-mode-area fibers," in Fiber Lasers IV: Technology, Systems, and Applications, D. J. Harter, A. Tünnermann, J. Broeng, and C. Headley, Proc. SPIE 6453, 64531E-1-11 (2007).
  4. I. Manek-Hönninger, J. Boullet, T. Cardinal, F. Guillen, M. Podgorski, R. Bello Doua, and F. Salin, "Photodarkening and photobleaching of an ytterbium-doped silica double-clad LMA fiber," Opt. Express 15, 1606-1611 (2007). [CrossRef] [PubMed]
  5. B. Morasse, S. Chatigny, E. Gagnon, C. Hovington, J.-P. Martin, and J.-P. De Sandro, "Low photodarkening single cladding ytterbium fibre amplifier," Proc. SPIE 6453, 64530H-1-9 (2007). [CrossRef]
  6. T. Kitabayashi, M. Ikeda, M. Nakai, T. Sakai, K. Himeno, and K. Ohashi, "Population inversion factor dependence of photodarkening of Yb-doped fibers and its suppression by highly aluminum doping," OFC 2005, paper OThC5.
  7. J. Jasapara, M. Andrejco, D. DiGiovanni, and R. Windeler, "Effect of heat and H2 gas on the photodarkening of Yb3+ fibers," in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies 2006, Technical Digest (Optical Society of America, Washington, DC, 2006), paper CTuQ5.
  8. A. V. Shubin, M. V. Yashkov, M. A. Melkumov, S. A. Smirnow, I. A. Bufetov, and E. M. Dianov, "Photodarkening of aluminosilicate and phosphosilicate Yb-doped fibers," in Conf. Digest of CLEO Europe-EQEC 2007, CJ3-1-THU.
  9. S. Jetschke, S. Unger, U. Röpke, and J. Kirchof, "Photodarkening in Yb doped fibers: experimental evidence of equilibrium states depending on the pump power," Opt. Express 15, 14838-14843 (2007). [CrossRef] [PubMed]
  10. 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 488nm irradiation," Opt. Lett. 32, 1626-1628 (2007). [CrossRef] [PubMed]
  11. J. Kirchhof, S. Unger, A. Schwuchow, S. Grimm, and V. Reichel, "Materials for high-power fiber lasers," J. Non-Cryst. Solids 352, 2399-2403 (2006). [CrossRef]
  12. M. Engholn, L. Norin, and D. �?berg, "Strong UV absorption and visible luminescence in ytterbium-doped aluminosilicate glass under UV excitation," Opt. Lett. 32, 3352-3354 (2007). [CrossRef]
  13. J. Koponen, M. Söderlund, H. J. Hoffman, D. Kliner, J. Koplow, and M. Hotoleanu, "Photodarkening Rate in Yb-doped Silica Fibers," Appl. Opt. 47, 1247-1256 (2008). [CrossRef] [PubMed]
  14. J. Koplow, D. Kliner, and L. Goldberg, "Single-mode operation of a coiled multimode fiber amplifier," Opt. Lett. 25, 442 (2000).
  15. R. Paschotta, J. Nilsson, A. C. Tropper, and D. C. Hanna, "Ytterbium-Doped Fiber Amplifiers," IEEE J. Quantum Electron. 33, 7 (1997).
  16. K. E. Mattson, S. N. Knudsen, B. Cadier, and T. Robin, "Photo darkening in ytterbium co-doped silica material," Proc. SPIE 6873, 6873 (2008).
  17. M. Hotoleanu, J. Koponen, and T. Kokki, "Spatial Distribution of Photodarkening in Large Mode Area Ytterbium Doped Fibers," in Advanced Solid-State Photonics Conference 2008, Technical digest (Optical Society of America, 2008), paper WE23.
  18. R. Olshansky and S. M. Oaks, "Differential mode attenuation measurements in graded-index fibers," Appl. Opt. 17, 1830-1835 (1978). [CrossRef] [PubMed]

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