论文标题
n $ _2^+$中激光排放的量子擦除
Quantum erasing of laser emission in N$_2^+$
论文作者
论文摘要
n $ _2^+$的无腔激光在800〜nm处诱导的激光脉冲几乎被延迟的双泵脉冲完全抑制。我们解释了这种令人惊讶的效果在没有种群反转的情况下的激光范围内。由第二脉冲引起的氮离子状态x $^2σ_g^+$和$^2π_U$之间的人口快速转移，终止了系统中放大的条件。在相同的线上解释了与旋转波数据包复兴的延迟相对应的延迟时出现的短激光爆发的出现。
Cavity-free lasing of N$_2^+$ induced by a femtosecond laser pulse at 800~nm is nearly totally suppressed by a delayed twin pump pulse. We explain this surprising effect within the V-scheme of lasing without population inversion. A fast transfer of population between nitrogen ionic states X$^2Σ_g^+$ and A$^2Π_u$, induced by the second pulse, terminates the conditions for amplification in the system. Appearance of short lasing bursts at delays corresponding to revivals of rotational wave packets are explained along the same lines.
