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arXiv · 2004.07785

Quantum erasing of laser emission in N$_2^+$

Rostyslav Danylo·Guillaume Lambert·Yi Liu·Vladimir Tikhonchuk·Aurélien Houard·André Mysyrowicz
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Abstract

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$^2\Sigma_g^+$ and A$^2\Pi_u$, 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.

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Rostyslav Danylo, Guillaume Lambert, Yi Liu, Vladimir Tikhonchuk, Aurélien Houard, André Mysyrowicz. 2020-04-16. Quantum erasing of laser emission in N$_2^+$. https://doi.org/10.1364/ol.395261

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