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Journal Articles Physical Review Letters Year : 2015

Recollision-Induced Superradiance of Ionized Nitrogen Molecules

Yi Liu
  • Function : Author
  • PersonId : 4334
  • IdHAL : yi-liu
Pengji Ding
Guillaume Lambert
Aurélien Houard
André Mysyrowicz


We propose a new mechanism to explain the origin of optical gain in the transitions between the excited and ground states of the ionized nitrogen molecule following irradiation of neutral nitrogen molecules with an intense ultrashort 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 superradiant emission, a feature that we confirm experimentally.
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Dates and versions

hal-01204958 , version 1 (24-09-2015)



Yi Liu, Pengji Ding, Guillaume Lambert, Aurélien Houard, Vladimir Tikhonchuk, et al.. Recollision-Induced Superradiance of Ionized Nitrogen Molecules. Physical Review Letters, 2015, 115, pp.133203. ⟨10.1103/PhysRevLett.115.133203⟩. ⟨hal-01204958⟩
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