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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 12 — Jun. 8, 2009
  • pp: 9940–9946

Heat-induced darkening and spectral broadening in photodarkened ytterbium-doped fiber under thermal cycling

Mikko J. Söderlund, Joan J. Montiel i Ponsoda, Jeffrey P. Koplow, and Seppo Honkanen  »View Author Affiliations


Optics Express, Vol. 17, Issue 12, pp. 9940-9946 (2009)
http://dx.doi.org/10.1364/OE.17.009940


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Abstract

We study thermal bleaching of photodarkening-induced loss in a 20-µm core diameter, large-mode-area ytterbium-doped silica fiber. Pristine and photodarkened samples are subjected to thermal cycling pulses. Recovery of the photodarkened fiber absorption coefficient initiates at ~350 °C and complete recovery is reached at ~625 °C. However, prior to recovery, the photodarkened fiber exhibits further heat-induced increase of absorption loss. This increase of loss is attributed to both a permanent increase of loss-inducing color centers and a temperature-dependent broadening of the absorption spectrum. Post-irradiation heat-induced formation of color centers suggests the presence of an intermediate energy state in the near-infrared photochemical mechanism for photodarkening.

© 2009 OSA

OCIS Codes
(120.6810) Instrumentation, measurement, and metrology : Thermal effects
(140.3510) Lasers and laser optics : Lasers, fiber
(160.5690) Materials : Rare-earth-doped materials

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: April 3, 2009
Revised Manuscript: May 18, 2009
Manuscript Accepted: May 25, 2009
Published: May 28, 2009

Citation
Mikko J. Söderlund, Joan J. Montiel i Ponsoda, Jeffrey P. Koplow, and Seppo Honkanen, "Heat-induced darkening and spectral broadening in photodarkened ytterbium-doped fiber under thermal cycling," Opt. Express 17, 9940-9946 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-12-9940


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References

  1. J. 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(24), 11539–11544 (2006). [CrossRef] [PubMed]
  2. 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(4), 1606–1611 (2007). [CrossRef] [PubMed]
  3. B. Morasse, S. Chatigny, E. Gagnon, C. Hovington, J.-P. Martin, and J.-P. De Sandro, “Low photodarkening single cladding ytterbium fibre amplifier,” in Fiber Lasers IV: Technology, Systems, and Applications, D. J. Harter, A. Tünnermann, J. Broeng, and C. Headley, Proc. SPIE 6453, 64530H–1-9 (2007).
  4. 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).
  5. 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-EQEC2007, CJ3–1-THU.
  6. J. Koponen, M. Söderlund, H. J. Hoffman, D. A. Kliner, J. P. Koplow, and M. Hotoleanu, “Photodarkening rate in Yb-doped silica fibers,” Appl. Opt. 47(9), 1247–1256 (2008). [CrossRef] [PubMed]
  7. 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(22), 14838–14843 (2007). [CrossRef] [PubMed]
  8. 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]
  9. 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), CTuQ5.
  10. J. J. Montiel i Ponsoda, M. J. Söderlund, J. Koplow, J. Koponen, A. Iho, and S. Honkanen, “Combined photodarkening and thermal bleaching measurement of an ytterbium-doped fiber,” in proceedings of Fiber Lasers VI: Technology, Systems, and Applications, Denis V. Gapontsev, Dahv A. V. Kliner, Proc. SPIE 7195, 71952D–1-7 (2009).
  11. M. Engholm, L. Norin, and D. Åberg, “Strong UV absorption and visible luminescence in ytterbium-doped aluminosilicate glass under UV excitation,” Opt. Lett. 32(22), 3352–3354 (2007). [CrossRef] [PubMed]
  12. M. Engholm and L. Norin, “Preventing photodarkening in ytterbium-doped high power fiber lasers; correlation to the UV-transparency of the core glass,” Opt. Express 16(2), 1260–1268 (2008). [CrossRef] [PubMed]

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