A mini all solid state system of non classical light generation has been experimentally demonstrated. The quantum correlated twin beams were generated from a semi monolithic nondegenerated optical parametric osaillator including an α cut KTiOPO 4 crystal pumped by an all solid intracavity frequency doubled Nd∶YVO 4/KTP laser (0.53 μm). The noise of the intensity difference between twin beams was reduced to 3.2 dB below the standard quantum limit. The pump threshold is lower than 10 mW.