Efficient energy transfer between Ce3+ and Nd3+ in cerium codoped Nd: YAG laser quality transparent ceramics

Transparent laser quality cerium codoped Nd: YAG ceramics were prepared using nanotechnology assisted ceramic preparation technique. The sample shows a very good transparency with a strong absorption peaks corresponding to Ce and Nd ions. Lasing oscillation was observed at IR laser wavelength of Nd emission with a maximum slope efficiency of 17.6%. Cross-energy transfer mechanism between these two ions was analyzed using 407 nm laser diode. Quantum yield of both the ions was calculated with an integrating sphere and UV-laser diode and the results were compared with Nd: YAG ceramics. The results show the efficient energy transfer between Ce3+ and Nd3+ and the transfer mechanism has been explained with the energy level diagrams.

Research highlights▶ The authors have developed transparent laser quality Nd: Ce: YAG ceramics using nanocrystalline assisted advance ceramic technology. The results have been compared with the performance of transparent Nd: YAG ceramics. It confirms that the laser quality of this new Nd: Ce: YAG ceramic is comparable to that of the conventional Nd: YAG ceramic. In addition to that, an efficient energy transfer mechanisms between Ce3+ and Nd3+ ions have been discussed clearly with an energy level diagram. The results are interesting and it shows that this material can be a new efficient material for solar pumped lasers also.