Abstract
Fifteen new, Raman far-infrared (FIR) laser emission lines in CH3F have been excited by optically pumping up to 24 GHz off resonance with high-intensity CO2 TEA laser radiation (up to 20 MW/cm2). Most of these new lines are produced with high quantum efficiency in a waveguide laser system. High-intensity laser pumping could also be applied to other gases to produce many new, efficient lines. The present results suggest that a nearly continuously tunable source of FIR radiation in the 175–500-μm range could be obtained through Raman laser emission in CH3F using a tunable, multiatmospheric CO2 pump laser.
© 1979 Optical Society of America
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