Experimental Studies of 374μm ¹⁵NH₃ Optically Pumped Far-Infrared Laser

374μm far-infrared radiation of ¹⁵NH₃ pumped by CO₂ laser has been studied experimentally. The efficiency of pumping, absorption of the pump beam. Stability of the output power diagnostics, a comparison with 432μm of the formic acid laser was also carried out.