Abstract

Intracavity triple-resonance spectroscopy in CH3OH far-infrared lasers has been extended to the microwave region. A triple-resonance signal at 13410.45(10) MHz was observed on the 224.5-μm CH3OH laser line optically pumped by a waveguide CO2 laser. The results confirm the assignment proposed for this line and improve the knowledge of A-state splitting in the v = 5 vibrational state.

© 1985 Optical Society of America

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