Experimental investigation demonstrates gain narrowing in an inhomogeneously broadened laser amplifier, confirming theoretical predictions of stimulated emission line profiles.
The phenomenon of gain narrowing of an inhomogeneously broadened line in stimulated emission has been observed and was found to give good agreement with theory. The effect was observed by measuring the variation in gain across the amplifying line using a fixed frequency laser oscillator and a tunable single-pass laser amplifier.
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David F. Hotz (1965) studied this question.
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