Hans U. Güdel

Power dependence of upconversion luminescence in lanthanide and transition-metal-ion systems

Markus P. Hehlen, Markus Pollnau, Daniel R. Gamelin, 2000 .

Upconversion Processes in Transition Metal and Rare Earth Metal Systems

Daniel R. Gamelin, D. Gamelin, H. Güdel, 2001 .

Ba2ErCl7—a new near IR to near UV upconversion material

Philipp Egger, Jürg Hulliger, Peter Rogin, 1996 .

Near-infrared to visible upconversion in Er 3+ doped Cs 3 Lu 2 Cl 9 , Cs 3 Lu 2 Br 9 , and Cs 3 Y 2 I 9 excited at 1.54 µm

Markus Pollnau, M. Pollnau, H. Güdel, 1999 .

Upconversion mechanisms in Er 3+ -doped Ba 2 YCl 7

Philipp Egger, Jürg Hulliger, H. Güdel, 1997 .

DENSITY FUNCTIONAL CALCULATIONS OF OPTICAL EXCITATION ENERGIES BY A TRANSITION-STATE METHOD

Claude Daul, H. Güdel, C. Daul, 1997 .

Infrared-to-visible upconversion in LaCl 3 :1% Er 3+ : Energy-level and line-strength calculations

Robert N. Schwartz, K. Krämer, R. Schwartz, 1997 .