Thermal and pump power effect in SrMoO4:Er3+-Yb3+ phosphor for thermometry and optical heating

Abstract

The pump power and temperature dependence study in the Er3+-Yb3+ codoped SrMoO4 phosphors for the green UC emission bands has been investigated by using two NIR (980nm and 808nm) laser radiation. The thermometric behaviour of the codoped phosphor operated in the 300–543K gives maximum sensitivity ∼25.5×10−3K−1 for 980nm excitation whereas, for 808nm excitation the maximum sensitivity is ∼21.5×10−3K−1 over 300–465K. The optical heating study upon two NIR laser radiations has also been performed. The experimental observations made in this article may be of significant interest for thermometry and optical heating.