Measurement of far-infrared laser frequencies generated by optically pumped N_2H_4 and N_2D_4

摘要

A three-laser heterodyne system has been used to measure the freuencies four previously observed far-infrared laser emissions generated by optically pumping either hydrazine (N_2H_4) or its fully deuterated isotope (N_2D_4) with a continuous-wave carbon dioxide laser. These newly measured frequencies have fractional uncertainties of ±2X10~(-7) and correspond to laser wavelengths ranging from 63.9 to 158.4 μm. This work represents the frist measurement of a N_2D_4 laser frequency.