Figure 4

(a) The UCL spectrum of BSAO: Y/E/0.2 M under 980 nm laser excitation versus pump power; (b) Pump power dependence of the green and red luminescence intensity of BSAO: Y/E/0.2 M.
(a) The UCL spectrum of BSAO: Y/E/0.2 M under 980 nm laser excitation versus pump power; (b) Pump power dependence of the green and red luminescence intensity of BSAO: Y/E/0.2 M.