Enhancing high-order above-threshold dissociation of H2+ beams with few-cycle laser pulses

Enhancing high-order above-threshold dissociation of H2+ beams with few-cycle laser pulses

High-order (three-photon or more) above-threshold dissociation (ATD) of H(2)(+) has generally not been observed using 800 nm light. We demonstrate a strong enhancement of its probability using intense 7 fs laser pulses interacting with beams of H(2)(+), HD(+), and D(2)(+) ions. The mechanism invokes...

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Veröffentlicht in:Physical review letters 2008-04, Vol.100 (13), p.133001-133001
Hauptverfasser: McKenna, J, Sayler, A M, Anis, F, Gaire, B, Johnson, Nora G, Parke, E, Hua, J J, Mashiko, H, Nakamura, C M, Moon, E, Chang, Z, Carnes, K D, Esry, B D, Ben-Itzhak, I
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container_end_page 133001
container_issue 13
container_start_page 133001
container_title Physical review letters
container_volume 100
creator McKenna, J
Sayler, A M
Anis, F
Gaire, B
Johnson, Nora G
Parke, E
Hua, J J
Mashiko, H
Nakamura, C M
Moon, E
Chang, Z
Carnes, K D
Esry, B D
Ben-Itzhak, I
description High-order (three-photon or more) above-threshold dissociation (ATD) of H(2)(+) has generally not been observed using 800 nm light. We demonstrate a strong enhancement of its probability using intense 7 fs laser pulses interacting with beams of H(2)(+), HD(+), and D(2)(+) ions. The mechanism invokes a dynamic control of the dissociation pathway. These measurements are supported by theory that additionally reveals, for the first time, an unexpectedly large contribution to ATD from highly excited electronic states.
doi_str_mv 10.1103/PhysRevLett.100.133001
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title Enhancing high-order above-threshold dissociation of H2+ beams with few-cycle laser pulses
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