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详细分析了高斯波包在圆极化光波中的原子反转特性,特别说明了在波包很窄或(和)激光很强的情形下,当时间趋于无穷时,高斯波包的原子反转趋于零.“,”In the paper,we study in detail the atomic inversion of a Gaussian atomic wave packet in a circularly polarized electromagnetic wave,especially show that the atomic inversion of a Gaussion wave packet approaches to zero as time approaches to infinity under the condition that the wave packet is very narrow or/and the laser is very strong.