Abstract

Vibration, rotation, and dissociation of the simple diatomic molecular Cl2+ and H2+ ions perturbed by a strong laser pulse with linear polarization are considered in the framework of classic mechanics. The duration of the laser pulse influences the rotation of the molecular axis and the vibration of the internuclear separation. The molecular axis of the heavy molecular ion Cl2+ is strongly rotated at the end of an ultrashort laser pulse, whereas the alignment of the H2+-ion axis occurs during the rise of a long laser pulse owing to quick dissociation. Angular distributions of protons in dissociation of the H2+ ion are calculated.

© 1998 Optical Society of America

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References

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  1. M. E. Sukharev and V. P. Krainov, Laser Phys. 7, 803 (1997).
  2. D. Normand, S. Dobosz, M. Lezius, P. D’Oliveira, and M. Schmidt, in Multiphoton Processes 1996, P. Lambropoulos and H. Walther, eds., Vol. 154 of Institute of Physics Series (Institute of Physics, Bristol, UK, 1997), p. 287.
  3. F. A. Ilkov, T. D. G. Walsh, and S. L. Chin, Phys. Rev. A 51, R1 (1995).
  4. F. A. Ilkov, S. Turgeon, T. D. G. Walsh, and S. L. Chin, Chem. Phys. Lett. 247, 1 (1995).
    [CrossRef]
  5. P. Dietrich and M. Yu. Ivanov, in Multiphoton Processes 1996, P. Lambropoulos and H. Walther, eds., Vol. 154 of Institute of Physics Series (Institute of Physics, Bristol, UK, 1997), p. 202.
  6. J. H. Posthumus, K. Codling, L. J. Frasinski, and M. R. Thomson, Laser Phys. 7, 813 (1997).
  7. A. A. Radzig and B. M. Smirnov, Reference Data on Atomic and Molecular Physics (Springer-Verlag, Berlin, 1986).
  8. J. H. Posthumus, M. R. Thomson, L. J. Frasinski, and K. Codling, in Multiphoton Processes 1996, P. Lambropoulos and H. Walther, eds., Vol. 154 of Institute of Physics Series (Institute of Physics, Bristol, UK, 1997), p. 298.
  9. D. T. Strickland, Y. Beaudoin, P. Dietrich, and P. B. Corkum, Phys. Rev. Lett. 68, 2755 (1992).
    [CrossRef] [PubMed]
  10. E. Charron, A. Giusti-Suzor, and F. H. Mies, Phys. Rev. A 49, R641 (1994).
    [CrossRef]
  11. J. F. McCann and A. D. Bandrauk, J. Chem. Phys. 96, 903 (1992).
    [CrossRef]

1997

M. E. Sukharev and V. P. Krainov, Laser Phys. 7, 803 (1997).

J. H. Posthumus, K. Codling, L. J. Frasinski, and M. R. Thomson, Laser Phys. 7, 813 (1997).

1995

F. A. Ilkov, T. D. G. Walsh, and S. L. Chin, Phys. Rev. A 51, R1 (1995).

F. A. Ilkov, S. Turgeon, T. D. G. Walsh, and S. L. Chin, Chem. Phys. Lett. 247, 1 (1995).
[CrossRef]

1994

E. Charron, A. Giusti-Suzor, and F. H. Mies, Phys. Rev. A 49, R641 (1994).
[CrossRef]

1992

J. F. McCann and A. D. Bandrauk, J. Chem. Phys. 96, 903 (1992).
[CrossRef]

D. T. Strickland, Y. Beaudoin, P. Dietrich, and P. B. Corkum, Phys. Rev. Lett. 68, 2755 (1992).
[CrossRef] [PubMed]

Bandrauk, A. D.

J. F. McCann and A. D. Bandrauk, J. Chem. Phys. 96, 903 (1992).
[CrossRef]

Beaudoin, Y.

D. T. Strickland, Y. Beaudoin, P. Dietrich, and P. B. Corkum, Phys. Rev. Lett. 68, 2755 (1992).
[CrossRef] [PubMed]

Charron, E.

E. Charron, A. Giusti-Suzor, and F. H. Mies, Phys. Rev. A 49, R641 (1994).
[CrossRef]

Chin, S. L.

F. A. Ilkov, T. D. G. Walsh, and S. L. Chin, Phys. Rev. A 51, R1 (1995).

F. A. Ilkov, S. Turgeon, T. D. G. Walsh, and S. L. Chin, Chem. Phys. Lett. 247, 1 (1995).
[CrossRef]

Codling, K.

J. H. Posthumus, K. Codling, L. J. Frasinski, and M. R. Thomson, Laser Phys. 7, 813 (1997).

Corkum, P. B.

D. T. Strickland, Y. Beaudoin, P. Dietrich, and P. B. Corkum, Phys. Rev. Lett. 68, 2755 (1992).
[CrossRef] [PubMed]

Dietrich, P.

D. T. Strickland, Y. Beaudoin, P. Dietrich, and P. B. Corkum, Phys. Rev. Lett. 68, 2755 (1992).
[CrossRef] [PubMed]

Frasinski, L. J.

J. H. Posthumus, K. Codling, L. J. Frasinski, and M. R. Thomson, Laser Phys. 7, 813 (1997).

Giusti-Suzor, A.

E. Charron, A. Giusti-Suzor, and F. H. Mies, Phys. Rev. A 49, R641 (1994).
[CrossRef]

Ilkov, F. A.

F. A. Ilkov, T. D. G. Walsh, and S. L. Chin, Phys. Rev. A 51, R1 (1995).

F. A. Ilkov, S. Turgeon, T. D. G. Walsh, and S. L. Chin, Chem. Phys. Lett. 247, 1 (1995).
[CrossRef]

Krainov, V. P.

M. E. Sukharev and V. P. Krainov, Laser Phys. 7, 803 (1997).

McCann, J. F.

J. F. McCann and A. D. Bandrauk, J. Chem. Phys. 96, 903 (1992).
[CrossRef]

Mies, F. H.

E. Charron, A. Giusti-Suzor, and F. H. Mies, Phys. Rev. A 49, R641 (1994).
[CrossRef]

Posthumus, J. H.

J. H. Posthumus, K. Codling, L. J. Frasinski, and M. R. Thomson, Laser Phys. 7, 813 (1997).

Strickland, D. T.

D. T. Strickland, Y. Beaudoin, P. Dietrich, and P. B. Corkum, Phys. Rev. Lett. 68, 2755 (1992).
[CrossRef] [PubMed]

Sukharev, M. E.

M. E. Sukharev and V. P. Krainov, Laser Phys. 7, 803 (1997).

Thomson, M. R.

J. H. Posthumus, K. Codling, L. J. Frasinski, and M. R. Thomson, Laser Phys. 7, 813 (1997).

Turgeon, S.

F. A. Ilkov, S. Turgeon, T. D. G. Walsh, and S. L. Chin, Chem. Phys. Lett. 247, 1 (1995).
[CrossRef]

Walsh, T. D. G.

F. A. Ilkov, S. Turgeon, T. D. G. Walsh, and S. L. Chin, Chem. Phys. Lett. 247, 1 (1995).
[CrossRef]

F. A. Ilkov, T. D. G. Walsh, and S. L. Chin, Phys. Rev. A 51, R1 (1995).

Chem. Phys. Lett.

F. A. Ilkov, S. Turgeon, T. D. G. Walsh, and S. L. Chin, Chem. Phys. Lett. 247, 1 (1995).
[CrossRef]

J. Chem. Phys.

J. F. McCann and A. D. Bandrauk, J. Chem. Phys. 96, 903 (1992).
[CrossRef]

Laser Phys.

M. E. Sukharev and V. P. Krainov, Laser Phys. 7, 803 (1997).

J. H. Posthumus, K. Codling, L. J. Frasinski, and M. R. Thomson, Laser Phys. 7, 813 (1997).

Phys. Rev. A

F. A. Ilkov, T. D. G. Walsh, and S. L. Chin, Phys. Rev. A 51, R1 (1995).

E. Charron, A. Giusti-Suzor, and F. H. Mies, Phys. Rev. A 49, R641 (1994).
[CrossRef]

Phys. Rev. Lett.

D. T. Strickland, Y. Beaudoin, P. Dietrich, and P. B. Corkum, Phys. Rev. Lett. 68, 2755 (1992).
[CrossRef] [PubMed]

Other

A. A. Radzig and B. M. Smirnov, Reference Data on Atomic and Molecular Physics (Springer-Verlag, Berlin, 1986).

J. H. Posthumus, M. R. Thomson, L. J. Frasinski, and K. Codling, in Multiphoton Processes 1996, P. Lambropoulos and H. Walther, eds., Vol. 154 of Institute of Physics Series (Institute of Physics, Bristol, UK, 1997), p. 298.

D. Normand, S. Dobosz, M. Lezius, P. D’Oliveira, and M. Schmidt, in Multiphoton Processes 1996, P. Lambropoulos and H. Walther, eds., Vol. 154 of Institute of Physics Series (Institute of Physics, Bristol, UK, 1997), p. 287.

P. Dietrich and M. Yu. Ivanov, in Multiphoton Processes 1996, P. Lambropoulos and H. Walther, eds., Vol. 154 of Institute of Physics Series (Institute of Physics, Bristol, UK, 1997), p. 202.

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Figures (5)

Fig. 1
Fig. 1

Total energy of a Cl2+ ion perturbed by an ultrashort laser pulse versus time. The laser pulse envelope is shown below.

Fig. 2
Fig. 2

Rotation angle of the molecular axis of a Cl2+ ion perturbed by an ultrashort laser pulse versus time. The laser pulse envelope is shown below.

Fig. 3
Fig. 3

Internuclear separation in a H2+ ion perturbed by a long CO2 laser pulse versus time. The laser pulse envelope is shown below. Dissociation occurs at the laser intensity of 1.76×1014 W/cm2.

Fig. 4
Fig. 4

Rotation angle of the molecular axis of a H2+ ion perturbed by a long CO2 laser pulse versus time. The initial velocity of thermal rotation corresponds to a rotational energy of 0.025 eV. The laser pulse envelope is shown below.

Fig. 5
Fig. 5

Angular distribution of protons in the dissociation of H2+ by a long CO2 laser pulse.

Equations (12)

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F(t)=F0 exp(-t2/2tl2)cos ωt,
L=½μR˙2+½μR2θ˙2-V[R, θ, F(t)].
V={1-W[R, θ, F(t)]}Eg+W[R, θ, F(t)]Egu.
W(R, θ, t)=exp-π[U(R)-G(R)]22ωR|F(t)cos θ|
Eg=Eg[R, θ, F(t)]=½[U(R)+G(R)]-½{[U(R)-G(R)]2+[F(t)R cos θ]2}1/2
Egu=Egu[R, θ, F(t)]=½[U(R)+G(R)]-½(-1)n(t)×{[U(R)-G(R)]2+[F(t)R cos θ]2}1/2
n(t)=ωtπ,[]istheintegerofanumber.
V=-½F(t)R cos θ;
ddt Lθ˙=Lθ,μ ddt R2 dθdt=-Vθ.
ddt LR˙=LR,μ d2Rdt2=-VR+μRdθdt2.
R(0)=Re,R˙(0)=0,θ(0)=θ0,θ˙(0)=α.
E(t)=μ2 dRdt2+12 μR2dθdt2+V.

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