Abstract
Transparent Cr4+:YAG (Y3AlSO12) ceramics doped with Ca and Mg as counterions and SiO2 as a sintering aid were fabricated by a solid‐state reaction method using high‐purity powders of Al2O3, Y2O3, and Cr2O3. The mixed powder compacts were sintered at 1750°C for 10 h in oxygen, or 1750°C for 10 h under vacuum, and then annealed at 1400°C for 10 h in oxygen. Cr‐doped YAG ceramics sintered in oxygen had a brown color and characteristic absorption by Cr4+ ions, whereas these YAG ceramics sintered under different conditions (vacuum + oxygen) had a green color and absorption at ∼590 and 430 nm by Cr3+ ions. The absorption behavior of YAG ceramics sintered in oxygen was almost equivalent to that of Cr4+:YAG single crystals fabricated by the Czochralski method.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
