New Laser Emission from NH3 Optically-Pumped by TE–CO2 Laser

Abstract
Nineteen new laser lines have been found from NH3 pumped by a TE–CO2 laser. These lines span the wavelength range from 20.9 to 148.7 µm. Assignments are made on 17 lines and three of them are ascribed to stimulated Raman scattering. Two lines are left unassigned.