Crystal growth, spectroscopic characteristics, and Judd-Ofelt analysis of Tm:GdScO3

Spectroscopic properties of Tm:Bi4Ge3O12 crystals grown by the micro-pulling-down method

“…During the last decade, different Tm doped crystalline host materials have been investigated for their favourable properties to obtain an efficient laser emission. Tm 3+ ions can be efficiently excited by commercial AlGaAs laser diode around 800 nm (Tm 3+ , 3 H 6 → 3 H 4 transition) and emission spectral intervals are around 1.5 µm [4], 1.9 µm [5] and 2.3 µm [6]. Laser oscillation of Tm 3+ has been demonstration in numerous hosts such as LiYF 4 [7,8], BaY 2 F 8 [9], CaF 2 [10],…”

The micro-pulling-down growth of Tm:LuAG and Tm,Pr:LuAG crystals and optical properties

“…By co-doping Pr 3+ ions into Tm:LuAG crystals, the lifetime of 3 F 4 level decreased greatly to 2.603 ms, while the lifetime of 3 H 4 level experienced a slight decrease from 378 μs to 346 μs. The lifetime of 3 H 4 level of Tm,Pr:LuAG crystal is much higher than the value of 0.5% Tm, 1% Tb:YVO 4 (50 μs [7), 0.5% Tm:GdScO 3 (265 μs [21]), 1% Tm:KGd(WO 4 ) 2 (175 μs [22]) and 1.5% Tm:YAG (270 μs [23]). To further investigate the effect of Pr 3+ ions, the energy transfer efficiency was calculated according to the flowing formula:…”

Exploration of the Crystal Growth and Crystal-Field Effect of Yb3+ in Orthorhombic GdScO3 and LaLuO3 Crystals

“…The typical orthorhombic solid solution (A x B 2– x O 3 ) would be formed when the radius difference between A 3+ and B 3+ ions is increased to 0.2 Å (trivalent lanthanide and Y 3+ ions) or 0.1 Å (the B-site is Sc 3+ ) according to the Ahren radius values. , In the past few decades, less attention has been paid to the orthorhombic mixed rare-earth sesquioxides, which is mainly related to the incongruent melting property for most mixed ones . GdScO 3 and LaLuO 3 are two orthorhombic congruent-melting crystals and attract widespread attention in developing solid-state lasers. − However, unlike the nearly standard stoichiometric cationic ratio in the GdScO 3 crystal, there is serious composition deviation in the growth of the LaLuO 3 crystal. , Moreover, the crystal-field difference of Yb 3+ ions between the two Yb 3+ -doped orthorhombic crystals is still unclear. Herein, the high-quality Yb:GdScO 3 and Yb:LaLuO 3 crystals were grown by the optical floating zone (OFZ) method, and the difference in Yb 3+ sites between the two orthorhombic crystals was analyzed utilizing structural determination, composition characterization, and spectral analysis.…”