Abstract

We studied the ionization and dissociation of polyatomic molecule methane in an intense femtosecond laser field with wavelength of 810 nm and intensities ranging from 1.4×10^(14) to 2.6×10^(15) W/cm2 by mass spectroscopy. Abundant fragment ions were observed in addition to the strong parent ion. The effect of frequency chirp was investigated and it was found that the negatively chirped pulses dramatically enhanced the dissociation probability, which might be used to control the dissociation pathways.

© 2005 Chinese Optics Letters

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  2. R. J. Levis and M. J. DeWitt, J. Phys. Chem. A 103, 6493 (1999).
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2002

C. Y. Wu, H. Z. Ren, T. T. L, R. Ma, H. Yang, H. B. Jiang, and Q. H. Gong, Int. J. Mass. Spectrom. 216, 249 (2002).

C. Y. Wu, H. Z. Ren, T. T. Liu, R. Ma, H. Yang, H. B. Jiang, and Q. H. Gong, J. Phys. B: At. Mol. Opt. Phys. 35, 2575 (2002).

K. Yamanouchi, Science 295, 1659 (2002).

2001

T. Brixner, B. Kiefer, and G. Gerber, Chem. Phys. 267, 241 (2001).

R. J. Levis, G. M. Menkir, and H. Rabitz, Science 292, 709 (2001).

2000

A. H. Zewail, J. Phys. Chem. A 104, 5660 (2000).

H. Rabitz, R. de Vivie-Riedle, M. Motzkus, and K. Kompa, Science 288, 824 (2000).

S. A. Rice, Nature 403, 496 (2000).

1999

D. Bauer and P. Mulser, Phys. Rev. A 59, 569 (1999).

R. J. Levis and M. J. DeWitt, J. Phys. Chem. A 103, 6493 (1999).

M. J. DeWitt and R. J. Levis, J. Chem. Phys. 110, 11368 (1999).

A. Talebpour, A. D. Bandrauk, J. Yang, and S. L. Chin, Chem. Phys. Lett. 313, 789 (1999).

1998

A. Assion, T. Baumert, M. Bergt, T. Brixner, B. Kiefer, V. Seyfried, M. Strehle, and C. Gerber, Science 282, 919 (1998).

R. N. Zare, Science 279, 1875 (1998).

R. P. Singhal, H. S. Kilic, K. W. D. Ledingham, T. Mc-Canny, W. X. Peng, D. J. Smith, C. Kosmidis, A. J. Langley, and P. F. Taday, Chem. Phys. Lett. 292, 643 (1998).

K. Mishima and K. Yamashita, J. Chem. Phys. 109, 1801 (1998).

1997

M. J. DeWitt, D. W. Peters, and R. J. Levis, Chem. Phys. 218, 211 (1997).

1995

M. J. DeWitt and R. J. Levis, J. Chem. Phys. 102, 8670 (1995).

Chem. Phys.

M. J. DeWitt, D. W. Peters, and R. J. Levis, Chem. Phys. 218, 211 (1997).

T. Brixner, B. Kiefer, and G. Gerber, Chem. Phys. 267, 241 (2001).

Chem. Phys. Lett.

A. Talebpour, A. D. Bandrauk, J. Yang, and S. L. Chin, Chem. Phys. Lett. 313, 789 (1999).

R. P. Singhal, H. S. Kilic, K. W. D. Ledingham, T. Mc-Canny, W. X. Peng, D. J. Smith, C. Kosmidis, A. J. Langley, and P. F. Taday, Chem. Phys. Lett. 292, 643 (1998).

Int. J. Mass. Spectrom.

C. Y. Wu, H. Z. Ren, T. T. L, R. Ma, H. Yang, H. B. Jiang, and Q. H. Gong, Int. J. Mass. Spectrom. 216, 249 (2002).

J. Chem. Phys.

K. Mishima and K. Yamashita, J. Chem. Phys. 109, 1801 (1998).

M. J. DeWitt and R. J. Levis, J. Chem. Phys. 102, 8670 (1995).

M. J. DeWitt and R. J. Levis, J. Chem. Phys. 110, 11368 (1999).

J. Phys. B: At. Mol. Opt. Phys.

C. Y. Wu, H. Z. Ren, T. T. Liu, R. Ma, H. Yang, H. B. Jiang, and Q. H. Gong, J. Phys. B: At. Mol. Opt. Phys. 35, 2575 (2002).

J. Phys. Chem. A

R. J. Levis and M. J. DeWitt, J. Phys. Chem. A 103, 6493 (1999).

A. H. Zewail, J. Phys. Chem. A 104, 5660 (2000).

Nature

S. A. Rice, Nature 403, 496 (2000).

Phys. Rev. A

D. Bauer and P. Mulser, Phys. Rev. A 59, 569 (1999).

Science

H. Rabitz, R. de Vivie-Riedle, M. Motzkus, and K. Kompa, Science 288, 824 (2000).

R. N. Zare, Science 279, 1875 (1998).

A. Assion, T. Baumert, M. Bergt, T. Brixner, B. Kiefer, V. Seyfried, M. Strehle, and C. Gerber, Science 282, 919 (1998).

R. J. Levis, G. M. Menkir, and H. Rabitz, Science 292, 709 (2001).

K. Yamanouchi, Science 295, 1659 (2002).

Other

J. T. Lint, T. L. Lai, D. S. Chuu, and T. F. Jiang, J. Phys. B: At. Mol. Opt. Phys. 31, L117 (1998).

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