Assunto
absorption spectra
1
cross sections
1
crystal doping
1
czochralski method
1
diode-pumped solid state lasers
1
energy transfer
1
energy-level transitions
1
excited states
1
experimental data
1
gadolinium fluorides
1
holmium
1
lasers
1
lithium fluorides
1
luminescence
1
lutetium fluorides
1
rare earths
1
thulium ions
1
ytterbium ions
1
yttrium fluorides
1