We demonstrate the possibility of exciting the multi−band emission in the visible and UV spectrum ranges by diode pumps of up−conversion solid−state active media on the basis of single crystal BaY₂F₈. The multiband luminescence in the visible spectral range is presented for one− and a multiband diode pumping by infrared (IR) laser diodes. The possibility of luminescence excitation in the 230 to 650 nm region from the overlaying 4f and 5d states of the Pr³⁺ and Ce³⁺ ions in the BaY₂F₈:(Yb³⁺, Pr³⁺, Ce³⁺) active media by 960, 840, 808 and 405 nm radiation has been discussed.

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