Two-pulse laser control of bond-selective fragmentation

Bjarne Amstrup; Niels Engholm Henriksen

doi:10.1063/1.472745

Two-pulse laser control of bond-selective fragmentation

Bjarne Amstrup, Niels Engholm Henriksen

Department of Chemistry

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Abstract

We elaborate on a two-pulse (pump-pump) laser control scheme for selective bond-breaking in molecules [Amstrup and Henriksen, J. Chem. Phys. 97, 8285 (1992)]. We show, in particular, that with this scheme one can overcome the obstacle of intramolecular vibrational relaxation. As an example, we consider an ozone molecule with isotopic substitution, that is, (OOO)-O-16-O-16-O-18. It is shown that asymmetric bond stretching can be created in simple (intense) laser fields. We predict that an alternating high selectivity between the channels O-16+(OO)-O-16-O-18 and (OO)-O-16-O-16+ O-18 can be obtained when such a non-stationary vibrating ozone molecule is photodissociated with short laser pulses (similar to 10-15 fs) with a time delay corresponding to half a vibrational period (similar to 17 fs). (C) 1996 American Institute of Physics.

Original language	English
Journal	Journal of Chemical Physics
Volume	105
Issue number	20
Pages (from-to)	9115-9120
ISSN	0021-9606
DOIs	https://doi.org/10.1063/1.472745
Publication status	Published - 1996

Bibliographical note

Copyright (1996) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

Keywords

COHERENT CONTROL
SEQUENCE INDUCED CONTROL
1ST ABSORPTION-BAND
TRIATOMIC-MOLECULES
INFRARED MULTIPHOTON EXCITATION
SCHRODINGER-EQUATION
HOD PHOTODISSOCIATION DYNAMICS
QUANTUM-MECHANICAL CALCULATIONS
ANALYTICAL POTENTIALS
HARTLEY BAND

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title = "Two-pulse laser control of bond-selective fragmentation",

abstract = "We elaborate on a two-pulse (pump-pump) laser control scheme for selective bond-breaking in molecules [Amstrup and Henriksen, J. Chem. Phys. 97, 8285 (1992)]. We show, in particular, that with this scheme one can overcome the obstacle of intramolecular vibrational relaxation. As an example, we consider an ozone molecule with isotopic substitution, that is, (OOO)-O-16-O-16-O-18. It is shown that asymmetric bond stretching can be created in simple (intense) laser fields. We predict that an alternating high selectivity between the channels O-16+(OO)-O-16-O-18 and (OO)-O-16-O-16+ O-18 can be obtained when such a non-stationary vibrating ozone molecule is photodissociated with short laser pulses (similar to 10-15 fs) with a time delay corresponding to half a vibrational period (similar to 17 fs). (C) 1996 American Institute of Physics.",

keywords = "COHERENT CONTROL, SEQUENCE INDUCED CONTROL, 1ST ABSORPTION-BAND, TRIATOMIC-MOLECULES, INFRARED MULTIPHOTON EXCITATION, SCHRODINGER-EQUATION, HOD PHOTODISSOCIATION DYNAMICS, QUANTUM-MECHANICAL CALCULATIONS, ANALYTICAL POTENTIALS, HARTLEY BAND",

author = "Bjarne Amstrup and Henriksen, {Niels Engholm}",

note = "Copyright (1996) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.",

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AU - Amstrup, Bjarne

AU - Henriksen, Niels Engholm

N1 - Copyright (1996) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

PY - 1996

Y1 - 1996

N2 - We elaborate on a two-pulse (pump-pump) laser control scheme for selective bond-breaking in molecules [Amstrup and Henriksen, J. Chem. Phys. 97, 8285 (1992)]. We show, in particular, that with this scheme one can overcome the obstacle of intramolecular vibrational relaxation. As an example, we consider an ozone molecule with isotopic substitution, that is, (OOO)-O-16-O-16-O-18. It is shown that asymmetric bond stretching can be created in simple (intense) laser fields. We predict that an alternating high selectivity between the channels O-16+(OO)-O-16-O-18 and (OO)-O-16-O-16+ O-18 can be obtained when such a non-stationary vibrating ozone molecule is photodissociated with short laser pulses (similar to 10-15 fs) with a time delay corresponding to half a vibrational period (similar to 17 fs). (C) 1996 American Institute of Physics.

AB - We elaborate on a two-pulse (pump-pump) laser control scheme for selective bond-breaking in molecules [Amstrup and Henriksen, J. Chem. Phys. 97, 8285 (1992)]. We show, in particular, that with this scheme one can overcome the obstacle of intramolecular vibrational relaxation. As an example, we consider an ozone molecule with isotopic substitution, that is, (OOO)-O-16-O-16-O-18. It is shown that asymmetric bond stretching can be created in simple (intense) laser fields. We predict that an alternating high selectivity between the channels O-16+(OO)-O-16-O-18 and (OO)-O-16-O-16+ O-18 can be obtained when such a non-stationary vibrating ozone molecule is photodissociated with short laser pulses (similar to 10-15 fs) with a time delay corresponding to half a vibrational period (similar to 17 fs). (C) 1996 American Institute of Physics.

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KW - SEQUENCE INDUCED CONTROL

KW - 1ST ABSORPTION-BAND

KW - TRIATOMIC-MOLECULES

KW - INFRARED MULTIPHOTON EXCITATION

KW - SCHRODINGER-EQUATION

KW - HOD PHOTODISSOCIATION DYNAMICS

KW - QUANTUM-MECHANICAL CALCULATIONS

KW - ANALYTICAL POTENTIALS

KW - HARTLEY BAND

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JO - Journal of Chemical Physics

JF - Journal of Chemical Physics

IS - 20

ER -

Two-pulse laser control of bond-selective fragmentation

Abstract

Bibliographical note

Keywords

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