The relaxation rate of upper level is equal to the transition probability of stimulated emission.

激光达到饱和强度时，上能级弛豫速率等于受激跃迁几率。

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The relaxation rate of upper level is equal to the transition probability of stimulated emission.

激光达到饱和强度时，上能级弛豫速率等于受激跃迁几率。

youdao