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- Jelger, Pär, et al.
(författare)
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Degradation-resistant lasing at 980 nm in a Yb/Ce/Al-doped silica fiber
- 2010
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Ingår i: Journal of the Optical Society of America. B, Optical physics. - 0740-3224 .- 1520-8540. ; 27:2, s. 338-342
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Tidskriftsartikel (refereegranskat)abstract
- In this work we measure how photodarkening affects the optical efficiency for three different Yb/Al-doped silica fibers operating at 980 nm, one of which is codoped with cerium. A volume Bragg grating is used for linewidth control and added rejection of amplified spontaneous emission. Several hours of degradation-resistant operation is obtained with the Ce-codoped fiber, while for the Yb/Al doped fibers a large drop in efficiency is observed within the first hour of operation. Our results show that Yb/Ce/Al-doped fibers could be excellent candidates for high-power 980 nm fiber laser sources.
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- Sudirman, Azizahalhakim, et al.
(författare)
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Increased sensitivity in fiber-based spectroscopy using carbon-coated fiber
- 2012
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Ingår i: Optics Express. - 1094-4087. ; 20:27, s. 28049-28055
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Tidskriftsartikel (refereegranskat)abstract
- Carbon-coated optical fibers are used here for reducing the luminescence background created by the primary-coating and thus increase the sensitivity of fiber-based spectroscopy systems. The 2-3 orders of magnitude signal-to-noise ratio improvement with standard telecom fibers is sufficient to allow for their use as Raman probes in the identification of organic solvents.
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