Photobleaching investigation of photo-darkened fiber using 633 nm irradiation: evidence of color center time evolution and losses mitigation

H. Gebavi; S. Taccheo; D. Mechin; D. Tregoat; A. Monteville; B. Cadier; T. Robin

doi:10.1117/12.2005857

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22 March 2013 Photobleaching investigation of photo-darkened fiber using 633 nm irradiation: evidence of color center time evolution and losses mitigation

H. Gebavi, S. Taccheo, D. Mechin, D. Tregoat, A. Monteville, B. Cadier, T. Robin

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Proceedings Volume 8601, Fiber Lasers X: Technology, Systems, and Applications; 86013C (2013) https://doi.org/10.1117/12.2005857
Event: SPIE LASE, 2013, San Francisco, California, United States

Abstract

We investigated photodarkening loss evolution and its reduction in Yb³⁺ doped aluminosilicate fibers utilizing 633 nm light irradiation. We demonstrate the final photobleaching value is intensity dependent, but the percentage of photodarkening reduction does not depend on dopant concentrations for settled bleaching intensity. We also show that the defects generated during the initial photodakening process have lower energy and can be effectively bleached by 633 nm photons while defects generated during photodarkening loss saturation cannot be bleached by low energy photons

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H. Gebavi, S. Taccheo, D. Mechin, D. Tregoat, A. Monteville, B. Cadier, and T. Robin "Photobleaching investigation of photo-darkened fiber using 633 nm irradiation: evidence of color center time evolution and losses mitigation", Proc. SPIE 8601, Fiber Lasers X: Technology, Systems, and Applications, 86013C (22 March 2013); https://doi.org/10.1117/12.2005857

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