Abstract

We report the frequency measurements of 18 optically pumped far-infrared(FIR) laser lines generated from ${\mathrm{CD}}_3\mathrm{OH}$ and ${ }^{13}{\mathrm{CH}}_3\mathrm{OH}.$ We use the heterodyne technique of mixing FIR laser radiations and microwave radiation on a metal-insulator-metal point-contact tunnel diode to determine the FIR laser frequencies. Two FIR laser systems, consisting of ${\mathrm{CO}}_2$ waveguide pump lasers and Fabry–Perot FIR laser cavities, were used as optical sources.

© 1997 Optical Society of America

New far-infrared laser lines and assignments for ¹³CH₃OH methanol

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