1. Hatch, S.E., Parsons, W.F., and Weagley, R.J., Hot-pressed polycrystalline CaF2:Dy2+ laser, Appl. Phys. Lett., 1964, vol. 5, no. 8, pp. 153–154.https://doi.org/10.1063/1.1754094
2. Zolotov, E.M., Prokhorov, A.M., and Shipulo, G.P., Luminescence and generation in CaF2:Dy2+ crystals excited with a ruby laser, Zh. Eksp. Teor. Fiz., 1966, vol. 22, no. 3, pp. 498–500.
3. Isaev, S.K., Kornienko, L.S., and Lariontsev, E.G., Emission kinetics of a hemispherical-cavity CaF2:Dy2+ laser, Kvantovaya Elektron. (Moscow), 1973, vol. 5, no. 17, pp. 41–46.
4. Kaminskii, A.A., Laser Crystals, Their Physics and Properties, Springer Series in Optical Sciences, vol, 14, Berlin: Springer, 1990, 2nd ed.
5. Lucca, A., Jacquemet, M., Druon, F., Balembois, F., Georges, P., Camy, P., Doualan, J.L., and Moncorgé, R., High-power tunable diode-pumped Yb3+:CaF2 laser, Opt. Lett., 2004, vol. 29, no. 16, pp. 1879–1881.https://doi.org/10.1364/OL.29.001879