A self adjusting q garnet crystal and making self-adjusting device q, q pulsed laser self-adjusting

The present invention relates to a self-Q-Q-garnet crystal and from the device fabrication, since the Q-switched laser. Since Q-garnet crystal Re3 +, Cr4 +: A3 (ScxGa1-x) 2Ga3O12, molecular formula (ReyCazA1-y-z) 3 (ScxGa1-x) 2 (CrzGa1-z) 3O12, where, Re = Nd or yb, a = Y, Gd or Lu, 0≤x≤1,0 Q-switched laser. Co-doped with Nd3 + and Cr4 + crystal ion Nd3 +, Cr4 +: A3 (ScxGa1-x) 2Ga3O12, can achieve the output having a wavelength of 0.9μm (4F3 / 2 → 4I9 / 2) and 1.06μm (4F3 / 2 → 4I11 / 2) from Q-switched laser; co-doped Yb3 + and Cr4 + crystal Yb3 ions +, Cr4 +: A3 (ScxGa1-x) 2Ga3O12), can achieve an output wavelength of 1μm (2F5 / 2 → 2F7 / 2) of about from Q-switched laser. Since Q-switched laser according to the present invention has a simple and compact structure, small size, low cost and simple operation.