A unique non-planar ring cavity consisting of a thermally bonded Porro prism and a corner cube prism is proposed. 946 nm single-frequency operation is achieved in this cavity by applying the ring permanent magnet to the corner cube prism made of fuse silica. The Porro prism by thermally bonded un-doped YAG with Nd∶YAG crystal acts as the laser gain medium. End-pumped by an optical fiber coupled semiconductor laser with core diameter of 200 μm and numerical aperture of 0.22, the maximum continuous output power of 160 mW at 946 nm is obtained.