2019 EJRNL PP RENPING SUN 1.pdf
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Terbatas Ratnasari
» ITB
Terbatas Ratnasari
» ITB
We experimentally investigate the two-dimensional photoelectron momentum spectra of aligned
diatomic molecules in an intense laser field. Our results reveal a novel prominent valley structure in
the molecular alignment dependence of the high-energy photoelectron spectra along the laser polarization.
Resorting to the molecular strong-field approximation and a simple semiclassical analysis, we show that
this valley structure stems from the destructive two-center interference of the laser-driven rescattered
electrons in diatomic molecules. Based on this two-center interference with aligned diatomic molecules, we
demonstrate for the first time a tomographic method to extract the molecular internuclear separation,
providing a more straightforward approach of molecular imaging, in comparison with, e.g., laser-induced
electron diffraction and fixed-angle broadband laser-driven electron scattering.