Single-frequency Nd : YAG ring lasers with corner cube prism

We put forward another form of the non-planar ring lasers, in which the cor ner cube prism is the hey element and the Nd:YAG crystal is used as a Porro prism to enclose the ring resonator. The phase shift due to the total inte rnal reflections of the three differently orientated reflection planes of t he corner cube prism, Faraday rotation in the Nd:YAG crystal placed in a ma gnetic field and the different output coupling in S and P polarization form an optical diode and enforce the single-frequency generating power, A roun d trip analysis of the polarization properties of the resonator is made by the evaluation of Jones matrix.