 | Up a level |
Suyver, J.F.; Aebischer, A.; Biner, Daniel; Gerner, P.; Grimm, J.; Heer, S.; Krämer, Karl; Reinhard, C.; Güdel, Hans-Ulrich (2005). Novel materials doped with trivalent lanthanides and transition metal ions showing near-infrared to visible photon upconversion. Optical materials, 27(6), pp. 1111-1130. North-Holland 10.1016/j.optmat.2004.10.021
Heer, S.; Wermuth, M.; Krämer, Karl; Güdel, Hans-Ulrich (2002). Sharp 2E upconversion luminescence of Cr3+ in Y3Ga5O12 codoped with Cr3+ and Yb3+. Physical review. B - condensed matter and materials physics, 65(12) American Physical Society 10.1103/PhysRevB.65.125112
Heer, S.; Wermuth, M.; Krämer, Karl; Güdel, Hans-Ulrich (2001). Upconversion excitation of Cr3+2E emission in Y3Ga5O12 codoped with Cr3+ and Yb3+. Chemical physics letters, 334(4-6), pp. 293-297. North-Holland 10.1016/S0009-2614(00)01444-5
Heer, S.; Wermuth, M.; Krämer, Karl; Ehrentraut, D.; Güdel, Hans-Ulrich (2001). Up-conversion excitation of sharp Cr3+ 2E emission in YGG and YAG codoped with Cr3+ and Yb3+. Journal of luminescence, 94-95, pp. 337-341. North-Holland 10.1016/S0022-2313(01)00395-7
