Atomic impersonator emits light of a different atom

Calculations show that a carefully engineered laser pulse can induce an atom to emit light as if it were a different atom.

Calculations show that a carefully engineered laser pulse can induce an atom to emit light as if it were a different atom. Atomic disguise. An argon atom (top center) struck by a laser pulse (top left) emits an outgoing wave (top right). This same outgoing emission can be mimicked by an excited hydrogen atom (bottom) struck by an appropriately shaped laser pulse.
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