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The luminescence properties of Yb 3+ -doped Li 6 Y(BO 3 ) 3 crystalline material are presented for applications as active medium in diode pumped (short pulse) lasers emitting around 1040nm and pumped at 975nm. A single crystal of several centimeter size was grown by the Czochralski method. The absorption and emission spectra were recorded. This borate exhibits a strong absorption line around 975nm and a broad emission line around 1040nm. The fluorescence lifetime associated to this intense 2 F 5/2 → 2 F 7/2 transition is about 1.1ms. All these parameters make this material a good host for short pulse laser applications. First laser tests have been performed by diode-pumping in a plano-concave cavity.