Conclusions
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1.
A pyrotechnical lamp has given quasicontinuous generation at 300°K with CaWO4 activated by Nd.
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2.
Pyrotechnical excitation gives a very economical laser of simple design and low weight that does not need supply from a power line.
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3.
Such excitation may be used with yttrofluorite [8], Ba-La or Sr-La fluoride activated with Nd [9, 10], fluorite with Dy [11], and Y3Al5O12 with various rare earths [12] to give thresholds comparable with those for CaWO4-Nd3+.
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Bodretsova, A.I., Kaminskii, A.A., Levikov, S.I. et al. A quasicontinuous laser with pyrotechnical excitation. J Appl Spectrosc 6, 168–169 (1967). https://doi.org/10.1007/BF00604344
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DOI: https://doi.org/10.1007/BF00604344