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arXiv · 1508.05516

Recollision induced superradiance of ionized nitrogen molecules

Yi Liu·Pengji Ding·Guillaume Lambert·Aurelien Houard·Vladimir Tikhonchuk·Andre Mysyrowicz
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Abstract

We propose a new mechanism to explain the origin of optical gain in the transitions between excited and ground state of the ionized nitrogen molecule following irradiation of neutral nitrogen molecules with an intense ultra short laser pulse. An efficient transfer of population to the excited state is achieved via field-induced multiple recollisions. We show that the proposed excitation mechanism must lead to a super-radiant emission, a feature that we confirm experimentally.

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Yi Liu, Pengji Ding, Guillaume Lambert, Aurelien Houard, Vladimir Tikhonchuk, Andre Mysyrowicz. 2015-08-22. Recollision induced superradiance of ionized nitrogen molecules. https://doi.org/10.1103/physrevlett.115.133203

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