Growth, Thermal, and Spectroscopic Properties of YbBa₃(PO₄)₃ Single Crystal: A New Stoichiometric Lasing Material

Abstract

Yb-doped materials can incorporate particularly high concentrations of Yb ion with weak concentration quenching, where high laser ion-doped materials with short absorption lengths permit the use of thin crystals with high absorption efficiencies. Herein, a new stoichiometric single crystal of YbBa 3 (PO 4 ) 3 with dimensions of ϕ 15 × 30 mm 3 was grown via the Czochralski pulling method. Rocking curve characterization showed that the asobtained YbBa 3 (PO 4 ) 3 crystal was of high quality, and the fullwidth at half-maximum measured from the (111) wafer was determined to be 28.8″. The crystal structure was characterized using single-crystal X-ray diffraction analysis. The results indicated that the crystal belongs to the cubic space group I4̅ 3d (No. 220) with cell parameters of a = b = c = 10.4352 (4) Å, V = 1136.32 (13) Å 3 , and Z = 4. The thermal and spectroscopic properties were evaluated, including the coefficient of thermal expansion, specific heat, thermal conductivity, and absorption and fluorescence spectra. The absorption cross-section at 975 nm and fluorescence lifetime were calculated as 1.02 × 10 −20 cm 2 and 220 μs, respectively. The emission cross-section at 1008 nm was determined to be 4.07 × 10 −20 cm 2 at room temperature, where the fullwidth at half-maximum of the emission peak was 75 nm, indicating that the stoichiometric crystalline YbBa 3 (PO 4 ) 3 is a promising laser crystal material.

Growth, Optical, and Spectroscopic Properties of Pure and Nd3+-Doped GdSr3(PO4)3 Crystals with Disordered Structure

“…The hardness of Nd:GSP was slightly lower than that of GSP, which might result from the slightly increased bond length after Nd doping. 32 The hardness values of GSP and Nd:GSP crystals are greater than that of the YVO 4 crystal (H M = 5) 33 and less than those of the YAG crystal (H M = 8.5) 34,35 and the Ca 4 YO-(BO 3 ) 3 crystal (H M = 6.5). 36 Transmission Spectrum and Laser Damage Threshold.…”

Growth, Thermal, and Optical Properties of a Novel Mid-Infrared Ho:LuYAP Laser Crystal

“…The actual Ho 3+ , Lu 3+ , Y 3+ ion doping concentrations of occupying same lattice position were tested, and effective segregation coefficient ( k eef ) was calculated by following equation where c 1 and c 2 are the ions actual doping and experimental concentration.…”