Multisites and energy transfer in Cr3+-Nd3+ codoped Y3Al5O12 and YAlO3 laser crystals

Abstract
Cr3+ multisites, Cr3+ → Nd3+ energy transfer and spectroscopic properties of Cr3+ codoped YAG : Nd and YAP : Nd crystals have been studied in detail. As in YAG : Cr, several multisites have been observed in YAP : Cr crystals. The Cr3+ → Nd3+ energy transfer is slightly more efficient in YAP : Nd, Cr than in YAG : Nd, Cr