Percival, R.M., Szebesta, D., Williams, J.R., Lauder, R.D.T., Tropper, A.C. and Hanna, D.C.
Diode-pumped operation of a thulium doped fluoride fibre amplifier suitable for 1st- window systems
Electronics Letters, 30, (19), . (doi:10.1049/el:19941087).
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A fully connectorised diode laser pumped first window amplifier has been constructed, for the first time, around a thulium doped fluoride fibre. For a 780/806nm combination of pump and signal wavelengths, small signal gains of 25-26dB and gain efficiencies of 2.4dB/mW have been achieved. In addition, output powers approaching +13dBm are possible for a launched pump power of 31mW, which corresponds to a conversion efficiency of around 65%.
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