| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1494493 | Optical Materials | 2017 | 5 Pages |
The infrared (IR) stimulated broad band anti-Stokes white emission of Yb3+ doped YAG nanoceramics was observed. It occurred under a focused beam of incident IR laser diode in vacuum. This intensity of white emission has decreased with increasing ambient atmosphere pressure. The power dependence of white emission has demonstrated the threshold behaviour characteristic to the avalanche effect. It was shown that the intensity of white emission increased with Yb3+ concentration. The white emission was observed in normal ambient atmosphere only for fully concentrated YbAG nanoceramic.
► White emission was observed under IR excitation of YAG:Yb nanocrystalline ceramics. ► The emission intensity was strongly dependent on excitation power, temperature and ambient pressure. ► The emission intensity increased significantly with concentration of active ions.
