Abstract
In this paper, a nonplanar ring laser operating at 946 nm has been proposed and demonstrated by using a specially designed Porro prism together with a commercially available corner cube prism. An Nd:YAG with a shape of scalene right triangle and an undoped YAG are thermally bonded to fabricate the novel composite Porro prism. A magnetic field providing the nonreciprocal Faraday rotation is applied to the corner cube prism, which gives flexibility in choosing magneto-optic materials. The operating principle of single-frequency operation for this ring laser is illustrated in detail. A maximum continuous output power of 360 mW was achieved when the laser operated stably on the single axial mode. 473 nm single-frequency operation with 6.7 mW has also been demonstrated by intracavity doubling with LiB3O5 crystal.
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