The spectrum and laser properties of ytterbium doped phosphate glass at low temperature

Optical properties of Yb3+-doped phosphate laser glasses

“…The multiphonon relaxation probability W MPR can be neglected as it needs 9 phonons to bridge the large energy gap of around 10770 cm −1 between the 2 F 5/2 and the 2 F 7/2 levels [46] in phosphate glasses [47]. As there is no intermediate level for the Yb 3+ ion, the energy transfer between Yb 3+ ions due to cross-relaxation process do not exist.…”

Oxidation behaviour of Li–Na–Pb–P–O–N oxynitride phosphate glasses

“…These properties make them interesting for applications as low-temperature sealing materials, 1-6 vitrification of nuclear wastes, 7,8 as well as laser host matrices when doped with rareearth elements. [9][10][11][12] However, their low chemical durability is a drawback which can limit their practical use.…”

Spectroscopic and fluorescence decay behaviors of Yb3+-doped SiO2–PbO–Na2O–K2O glass

“…The upper energy level 2 F 5/2 splits into two sub-levels, 10 277 and 11 025 cm À1 . Compared with Yb 3+ doped phosphate glass [3], Yb 3+ -doped silicate glass has large ground and upper energy levels splitting. This will support better thermal stability during the laser experiment.…”

“…In Fig. 1 the sub-peak of absorption is at 907 nm, which is far away from 974 nm main peak compared with 930 nm sub-peak at Yb 3+ -doped phosphate glass [3]. Based on the measured absorption spectra, the peak absorption cross section (s abs ) and stimulated emission cross section (s emi ) at sub-peaks(1010 nm), are calculated according to the absorption coefficient and the reciprocity method [1,2].…”

“…Because of the simple quasi-three-level energy structures, ytterbium ions doped glass exhibits high quantum efficiency, low nonradiative decay rate and long fluorescence lifetime (1-2 ms) [1][2][3]. Usually high Yb 3+ doping can be achieved in glasses and crystals.…”