Resonantly enhanced three-wave mixing of the 10.784 μm

(18) line of the C
13O
216laser and microwave radiation at 26.378 GHz in Stark tunable N
14H
3has resulted in upconverted parametric output at 10.774 μm. The energy levels of N
14H
3involved in the interaction and the apparatus used in the experiment are described. Experimental results showing saturation of the parametric signal with increasing N
14H
3pressure, input microwave power, and input laser power are described.