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Dynamic Stark effect in CH3F and other optically pumped lasers

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1 Author(s)
Chang, T.Y. ; Bell Telephone Laboratories, Inc., Holmdel, NJ

The dynamic Stark effect in optically pumped lasers is discussed. Javan's theory of three-level masers is extended and elucidated by transforming his expressions into new forms in which all of the major terms can be deduced from a modified energy-level diagram through simple physical arguments. The gain spectra of high-power 496-μm CH3F lasers are calculated from the theory. Contrary to previous interpretations, the wide emission bandwidth at pump intensities above 30 kW/cm2is shown to be primarily due to the dynamic Stark effect on K= 1, 2, and 3 components. It is found that to obtain a narrow emission bandwidth the pump intensity should be kept below 10 kW/cm2.

Published in:

Quantum Electronics, IEEE Journal of  (Volume:13 ,  Issue: 12 )