Abstract
Yb3+-doped silicate fibers are commonly employed in optical systems utilizing fiber lasers and amplifiers. Deployment of such materials and systems in space-based and other adverse radiation environments requires knowledge of their response to fluxes of ionizing radiation. This paper reports the results of gamma radiation exposures on a suite of passive, modern, highly Yb3+-doped aluminosilicate fibers. Of interest are the effects of total dose and dose rate as well as the development of radiation-induced absorption across a broad spectral window (1.0-1.7 μm). Results indicate that these fibers exhibit reasonable radiation resistance to gamma exposures typical of a five-year low-Earth-orbit environment. Maximum transmittance losses of less than 10% in the 1.0-1.7-μm spectral region for total gamma exposures of 2-5 krad (Si) were observed. In addition, it was found that the dependence of transmittance on radiation dose generally followed a power law that was dependent on dose rate.
Original language | English (US) |
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Pages (from-to) | 581-586 |
Number of pages | 6 |
Journal | IEEE Journal of Quantum Electronics |
Volume | 44 |
Issue number | 6 |
DOIs | |
State | Published - 2008 |
Keywords
- Gamma irradiation
- Photodarkening
- Radiation effects
- Radiation-induced absorption
- Rare-earth doped fibers
- Yb-doped fibers
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Electrical and Electronic Engineering