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利用密度矩阵方法在裸态和缀饰态中研究了在外场引起原子相干的v型寿命自加宽能级系统中产生无反转激光的条件。发现适当选择抽运概率,该系统可以产生无反转激光。The conditions for realizing lasing without inversion are investigated via density matrix method in bare and dressed states in the V-type closed lifetime-broadened system where atomic coherence is induced by an external electromagnetic field. It is shown that a proper choice of pumping rate may lead to the realization of lasing without inversion.
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