Journal
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
Volume 46, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0953-4075/46/2/021001
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Funding
- ERC under the EU's FP7 (AIG) [227597]
- IMPRS at the MPIK, Heidelberg
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Excitation of two identical species in a cluster by the absorption of two photons of the same energy is strongly suppressed since the excitation of one subunit blocks the excitation of the other one due to the binding Coulomb interaction. Here, we propose a very efficient way to overcome this blockade in producing doubly excited homoatomic clusters by a single intense laser pulse. For Ne-2 it is explicitly demonstrated that the optimal carrier frequency of the pulse is given by half of the target state's energy, which allows one to doubly excite more than half of the dimers at moderate field intensities. These dimers then undergo ultrafast interatomic decay bringing one Ne to its ground state and ionizing the other one. The reported ab initio electron spectra present reliable predictions for future experiments by strong laser pulses.
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