Improvement of optical properties of Nd:YAG transparent ceramics by post-annealing and post hot isostatic pressing

Co-precipitation synthesis and vacuum sintering of Nd:YAG powders for transparent ceramics

“…The manufacturing process during this work is similar to that reported in our previous works [25][26][27][28][29] (2 at.% Nd:YAG) in distilled water. The precipitant solution was prepared by dissolving ammonium hydrogen carbonate (NH 4 HCO 3 , analytical grade) in mixed solvent of alcohol and distilled water.…”

Direct thermal diffusion bonding of Nd:YAG/YAG composite transparent ceramics by vacuum sintering

“…The manufacturing process during of separate ceramics is similar to that reported in our previous works [23][24][25][26][27]. Neodymium nitrate (Nd(NO 3 99.99%) and ammonium aluminum sulfate (NH 4 Al(SO 4 ) 2 ·12H 2 O, 99.99%) were mixed together in stoichiometric proportions to form the chemical stoichiometry composition, with Nd 3+ doping concentrations of 0 at.% and 2.0 at.%, respectively, in distilled water.…”

“…Nevertheless, the thermal diffusion bonding technology of Nd:YAG/YAG ceramics has not yet been investigated systematically, and especially, the optimal conditions and underlying mechanism of diffusion across contact surfaces of bulk ceramics are seldom reported so far. We previously studied the synthesis of high purity and agglomeration-free YAG nano-powders [23][24][25], the influence of post-annealing and post-HIP on Nd:YAG ceramics [26,27], and light scattering loss of Nd:YAG ceramics by pores [28]. Most recently we fabricated composite Nd:YAG/YAG transparent ceramics by vacuum sintering.…”

Fabrication of Yb3+-doped YAG transparent ceramics by aqueous gelcasting

“…To obtain Yb:YAG transparent ceramics with desired microstructure, its fabrication technology is very important. In recent years, many efforts have been made on YAG-based ceramics related to the synthesis of high-purity and agglomeration-free powders [8][9][10], amount and choice of sintering additives [11][12][13], optimization of sintering process [14][15][16], post-treatment [17][18][19][20], etc. Powder shaping technology was also important for obtaining highly transparent ceramics.…”