Helium–neon 0.63 μ laser with a 129J2 nonlinear absorption cell

A description is given of an ³He–²²Ne/¹²⁹J₂ laser stabilized with the aid of peaks A, B, and C in the nonlinear absorption spectrum of ¹²⁹J₂ in the 0.63 μ range. The frequency characteristics of the laser are reported. This prototype laser is constructed using soviet materials, including the iodine-129 nuclide.