Determination of the Er3+ to Yb3+ energy transfer efficiency in Er3+/Yb3+-codoped YVO4 crystals

摘要

The energy transfer efficiency from Er3+ to Yb3+ ions in yttrium orthovanadate single crystals (YVO4) is experimentally obtained, by using a method based on the simultaneous and multiwavelength measurement of photoacoustic and luminescent signals after pulsed laser excitation. The result is reached by comparing with the predictions from Judd-Ofelt analysis and the lifetime measurements. The energy transfer between the ions, from Er3+ to Yb3+, Must be considered in order to fit the experimental results. A value of energy transfer efficiency (psi = 0.16) is obtained. [References: 13]