Hexagonal Sodium Yttrium Fluoride Based Green and Blue Emitting Upconversion Phosphors von Krämer, Karl W, Biner, Daniel, Frei, Gabriela, Güdel, Hans U, Hehlen, Markus P, Lüthi, Stefan R

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Power dependence of upconversion luminescence in lanthanide and transition-metal-ion systems von Pollnau, M., Gamelin, D. R., Lüthi, S. R., Güdel, H. U., Hehlen, M. P.

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Cooperative bistability in dense, excited atomic systems von Hehlen, MP, Güdel, HU, Shu, Q, Rai, J, Rai, S, Rand, SC

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Cooperative optical bistability in the dimer system Cs3Y2Br9:10% Yb3 von Hehlen, Markus P., Güdel, Hans U., Shu, Qize, Rand, Stephen C.

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Reabsorption artifacts in measured excited-state lifetimes of solids von Hehlen, Markus P.

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Intrinsic bistability of luminescence and stimulated emission in Yb- and Tm-doped glass von Kuditcher, A, Hehlen, MP, Florea, CM, Winick, KW, Rand, SC

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Optical spectroscopy of the dimer system Cs3Yb2Br9 von HEHLEN, M. P, GÜDEL, H. U

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Excited-state dynamics and optical bistability in the dimer system Cs3Lu2Br9 :Yb3 von LÜTHI, S. R, HEHLEN, M. P, RIEDENER, T, GÜDEL, H. U

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Electron–phonon interactions in CsCdBr3:Yb3 von Hehlen, Markus P., Kuditcher, Amos, Rand, Stephen C., Tischler, Michael A.

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Ultrafast, cross-correlated harmonic imaging through scattering media von Kuditcher, A, Hoover, B G, Hehlen, M P, Leith, E N, Rand, S C, Shih, M P

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Influence of the chemical environment on the electronic structure and spectroscopic properties of Er3+ doped Cs3Lu2Cl9, Cs3Lu2Br9, and Cs3Y2I9 von Lüthi, Stefan R., Güdel, Hans U., Hehlen, Markus P.

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Electronic energy-level structure and correlation crystal-field effects of Er3+ in Cs3Lu2Br9 von Hehlen, Markus P., Güdel, Hans U., Quagliano, John R.

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Synthesis and spectroscopic properties of praseodymium(III) acetate hydrate von Hehlen, Markus P, Riesen, Hans, Guedel, Hans U

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NIR to VIS/UV up-conversion in Cs3Er2X9 (X = Cl, Br, I) von Hehlen, Markus P., Kra¨mer, Karl, Gu¨del, Hans U.

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Dynamics of infrared-to-visible upconversion in Cs3Lu2Br9:1%Er3 von Hehlen, MP, Frei, G, Güdel, HU

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Upconversion in Er3+-dimer systems: Trends within the series Cs3Er2X9 (X=Cl,Br,I) von Hehlen, MP, Krämer, K, Güdel, HU, McFarlane, RA, Schwartz, RN

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