Laser medium, laser oscillation device and the laser oscillation method

摘要

laser medium according to the present invention, Cr ^{3 +} and Nd ^{3 +} was doped M ₁ RM ₂ O ₄ (However, M ₁ : Ca, 1 or two or more alkaline earth metal element selected from the group consisting of Sr and Ba, R: Y, La, 1 or two or more rare earth elements selected from the group consisting of Gd and Lu, M ₂ : 1 or two selected from the group consisting of Al and Ga consisting of group 13 elements) is a single crystal or ceramics. Laser medium according to the present invention, it is possible to perform laser oscillation by the solar light pumped.