New Materials for Tunable Lasers in the Near Infrared |
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| Authors: | J.F. Donegan G.P. Morgan T.J. Glynn G. Walker |
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| Affiliation: | 1. Physics Department , University College , Galway, Ireland;2. Physics Department , University College , Galway, Ireland;3. Department of Pure and Applied Physics , UMIST , P.O. Box 88, Manchester, M60 1QD, England |
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| Abstract: | Abstract There has been considerable recent effort aimed at realising tunable near-infrared laser action in solid-state media. Beyond 1 μm Ni2+ and Co2+ emissions have been mainly studied, and laser action has been achieved in several materials doped with these ions although usually only at low temperatures. Luminescence from Co2+ and Ni2+ in the host material LiGa5O8 is described and evidence is presented for a high quantum efficiency, even up to room temperature. We describe also the results of our lifetime and luminescence measurements on the various active centres in the Mg2SiO4: Cr laser system. |
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