Abstract

High-order harmonics and single attosecond pulse generation by using an infrared laser pulse combined with attosecond pulse trains (APT) interacting with He+ have been investigated. We show that the ionization for different instant time intervals can be controlled by altering the time delay between the APT and the infrared pulse. Consequently, APT can be used as a tool to control the efficiency of high-order harmonics emitted at different times. By choosing appropriate APT and time delay, the driving pulse width for single attosecond pulse generation can be extended up to six optical cycles.

© 2007 Optical Society of America

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  1. M. Hentschel, R. Kienberger, Ch. Spielmann, G. A. Reider, N. Milosevic, T. Brabec, P. Corkum, U. Heinzmann, M. Drescher, and F. Krausz, "Attosecond metrology," Nature 414, 509-513 (2001).
    [CrossRef] [PubMed]
  2. I. P. Christov, M. M. Murnane, and H. C. Kapteyn, "High-harmonic generation of attosecond pulses in the "single-cycle" regime," Phys. Rev. Lett. 78, 1251-1254 (1997).
    [CrossRef]
  3. A. Bohan, P. Antoine, D. B. Milosevic, and B. Piraux, "Phase-dependent harmonic emission with ultrashort laser pulses," Phys. Rev. Lett. 81, 1837-1840 (1998).
    [CrossRef]
  4. P. M. Paul, E. S. Toma, P. Breger, G. Mullot, F. Auge, Ph. Balcou, H. G. Muller, and P. Agostini, "Observation of a train of attosecond pulses from high harmonic generation," Science 292, 1689-1692 (2001).
    [CrossRef] [PubMed]
  5. P. B. Corkum, "Plasma perspective on strong-field multiphoton ionization," Phys. Rev. Lett. 71, 1994-1997 (1993).
    [CrossRef] [PubMed]
  6. T. Pfeifer, L. Gallmann, M. J. Abel, P. M. Nagel, D. M. Neumark, and S. R. Leone, "Heterodyne mixing of laser fields for temporal gating of high-order harmonic generation," Phys. Rev. Lett. 97, 163901 (2006).
    [CrossRef] [PubMed]
  7. Z. Zeng, R. Li, X. Xie, and Z. Xu, "High-intensity attosecond high-order harmonic generation driven by a synthesized laser field," Phys. Rev. A 70, 053809 (2004).
    [CrossRef]
  8. T. Pfeifer, L. Gallmann, M. J. Abel, D. M. Neumark, and S. R. Leone, "Single attosecond pulse generation in the multicycle-driver regime by adding a weak second-harmonic field," Opt. Lett. 31, 975-977 (2006).
    [CrossRef] [PubMed]
  9. K. J. Schafer, M. B. Gaarde, A. Heinrich, J. Biegert, and U. Keller, "Strong field quantum path control using attosecond pulse trains," Phys. Rev. Lett. 92, 023003 (2004).
    [CrossRef] [PubMed]
  10. A. Sanpera, J. B. Watson, M. Lewenstein, and K. Burnett, "Harmonic-generation control," Phys. Rev. A 54, 4320-4326 (1996).
    [CrossRef] [PubMed]
  11. J. B. Watson, A. Sanpera, X. Chen, and K. Burnett, "Harmonic generation from a coherent superposition of states," Phys. Rev. A 53, R1962-R1965 (1996).
    [CrossRef] [PubMed]
  12. B. Wang, T. Cheng, X. Li, P. Fu, S. Chen, and J. Liu, "Pulse-duration dependence of high-order harmonic generation with coherent superposition state," Phys. Rev. A 72, 063412 (2005).
    [CrossRef]
  13. K. L. Ishikawa, "Efficient photoemission and ionization of He+ by a combined fundamental laser and high-order harmonic pulse," Phys. Rev. A 70, 013412 (2004).
    [CrossRef]
  14. K. L. Ishikawa, "Photoemission and ionization of He+ under simultaneous irradiation of fundamental laser and high-order harmonic pulses," Phys. Rev. Lett. 91, 043002 (2003).
    [CrossRef] [PubMed]
  15. J. Biegert, A. Heinrich, C. P. Hauri, W. Cornelis, P. Schlup, M. P. Anscombe, M. B. Gaarde, K. J. Schafer, and U. Keller, "Control of high-order harmonic emission using attosecond pulse trains," J. Mod. Opt. 53, 87-96 (2006).
    [CrossRef]
  16. V. S. Yakovlev and A. Scrinzi, "High harmonic imaging of few-cycle laser pulses," Phys. Rev. Lett. 91, 153901 (2003).
    [CrossRef] [PubMed]
  17. P. Antoine, B. Piraux, and A. Maquet, "Time profile of harmonics generated by a single atom in a strong electromagnetic field," Phys. Rev. A 51, R1750-R1753 (1995).
    [CrossRef] [PubMed]
  18. K. J. Schafer and K. C. Kulander, "High harmonic generation from ultrafast pump lasers," Phys. Rev. Lett. 78, 638-641 (1997).
    [CrossRef]

2006 (3)

T. Pfeifer, L. Gallmann, M. J. Abel, D. M. Neumark, and S. R. Leone, "Single attosecond pulse generation in the multicycle-driver regime by adding a weak second-harmonic field," Opt. Lett. 31, 975-977 (2006).
[CrossRef] [PubMed]

T. Pfeifer, L. Gallmann, M. J. Abel, P. M. Nagel, D. M. Neumark, and S. R. Leone, "Heterodyne mixing of laser fields for temporal gating of high-order harmonic generation," Phys. Rev. Lett. 97, 163901 (2006).
[CrossRef] [PubMed]

J. Biegert, A. Heinrich, C. P. Hauri, W. Cornelis, P. Schlup, M. P. Anscombe, M. B. Gaarde, K. J. Schafer, and U. Keller, "Control of high-order harmonic emission using attosecond pulse trains," J. Mod. Opt. 53, 87-96 (2006).
[CrossRef]

2005 (1)

B. Wang, T. Cheng, X. Li, P. Fu, S. Chen, and J. Liu, "Pulse-duration dependence of high-order harmonic generation with coherent superposition state," Phys. Rev. A 72, 063412 (2005).
[CrossRef]

2004 (3)

K. L. Ishikawa, "Efficient photoemission and ionization of He+ by a combined fundamental laser and high-order harmonic pulse," Phys. Rev. A 70, 013412 (2004).
[CrossRef]

Z. Zeng, R. Li, X. Xie, and Z. Xu, "High-intensity attosecond high-order harmonic generation driven by a synthesized laser field," Phys. Rev. A 70, 053809 (2004).
[CrossRef]

K. J. Schafer, M. B. Gaarde, A. Heinrich, J. Biegert, and U. Keller, "Strong field quantum path control using attosecond pulse trains," Phys. Rev. Lett. 92, 023003 (2004).
[CrossRef] [PubMed]

2003 (2)

K. L. Ishikawa, "Photoemission and ionization of He+ under simultaneous irradiation of fundamental laser and high-order harmonic pulses," Phys. Rev. Lett. 91, 043002 (2003).
[CrossRef] [PubMed]

V. S. Yakovlev and A. Scrinzi, "High harmonic imaging of few-cycle laser pulses," Phys. Rev. Lett. 91, 153901 (2003).
[CrossRef] [PubMed]

2001 (2)

M. Hentschel, R. Kienberger, Ch. Spielmann, G. A. Reider, N. Milosevic, T. Brabec, P. Corkum, U. Heinzmann, M. Drescher, and F. Krausz, "Attosecond metrology," Nature 414, 509-513 (2001).
[CrossRef] [PubMed]

P. M. Paul, E. S. Toma, P. Breger, G. Mullot, F. Auge, Ph. Balcou, H. G. Muller, and P. Agostini, "Observation of a train of attosecond pulses from high harmonic generation," Science 292, 1689-1692 (2001).
[CrossRef] [PubMed]

1998 (1)

A. Bohan, P. Antoine, D. B. Milosevic, and B. Piraux, "Phase-dependent harmonic emission with ultrashort laser pulses," Phys. Rev. Lett. 81, 1837-1840 (1998).
[CrossRef]

1997 (2)

K. J. Schafer and K. C. Kulander, "High harmonic generation from ultrafast pump lasers," Phys. Rev. Lett. 78, 638-641 (1997).
[CrossRef]

I. P. Christov, M. M. Murnane, and H. C. Kapteyn, "High-harmonic generation of attosecond pulses in the "single-cycle" regime," Phys. Rev. Lett. 78, 1251-1254 (1997).
[CrossRef]

1996 (2)

A. Sanpera, J. B. Watson, M. Lewenstein, and K. Burnett, "Harmonic-generation control," Phys. Rev. A 54, 4320-4326 (1996).
[CrossRef] [PubMed]

J. B. Watson, A. Sanpera, X. Chen, and K. Burnett, "Harmonic generation from a coherent superposition of states," Phys. Rev. A 53, R1962-R1965 (1996).
[CrossRef] [PubMed]

1995 (1)

P. Antoine, B. Piraux, and A. Maquet, "Time profile of harmonics generated by a single atom in a strong electromagnetic field," Phys. Rev. A 51, R1750-R1753 (1995).
[CrossRef] [PubMed]

1993 (1)

P. B. Corkum, "Plasma perspective on strong-field multiphoton ionization," Phys. Rev. Lett. 71, 1994-1997 (1993).
[CrossRef] [PubMed]

Abel, M. J.

T. Pfeifer, L. Gallmann, M. J. Abel, P. M. Nagel, D. M. Neumark, and S. R. Leone, "Heterodyne mixing of laser fields for temporal gating of high-order harmonic generation," Phys. Rev. Lett. 97, 163901 (2006).
[CrossRef] [PubMed]

T. Pfeifer, L. Gallmann, M. J. Abel, D. M. Neumark, and S. R. Leone, "Single attosecond pulse generation in the multicycle-driver regime by adding a weak second-harmonic field," Opt. Lett. 31, 975-977 (2006).
[CrossRef] [PubMed]

Agostini, P.

P. M. Paul, E. S. Toma, P. Breger, G. Mullot, F. Auge, Ph. Balcou, H. G. Muller, and P. Agostini, "Observation of a train of attosecond pulses from high harmonic generation," Science 292, 1689-1692 (2001).
[CrossRef] [PubMed]

Anscombe, M. P.

J. Biegert, A. Heinrich, C. P. Hauri, W. Cornelis, P. Schlup, M. P. Anscombe, M. B. Gaarde, K. J. Schafer, and U. Keller, "Control of high-order harmonic emission using attosecond pulse trains," J. Mod. Opt. 53, 87-96 (2006).
[CrossRef]

Antoine, P.

A. Bohan, P. Antoine, D. B. Milosevic, and B. Piraux, "Phase-dependent harmonic emission with ultrashort laser pulses," Phys. Rev. Lett. 81, 1837-1840 (1998).
[CrossRef]

P. Antoine, B. Piraux, and A. Maquet, "Time profile of harmonics generated by a single atom in a strong electromagnetic field," Phys. Rev. A 51, R1750-R1753 (1995).
[CrossRef] [PubMed]

Auge, F.

P. M. Paul, E. S. Toma, P. Breger, G. Mullot, F. Auge, Ph. Balcou, H. G. Muller, and P. Agostini, "Observation of a train of attosecond pulses from high harmonic generation," Science 292, 1689-1692 (2001).
[CrossRef] [PubMed]

Balcou, Ph.

P. M. Paul, E. S. Toma, P. Breger, G. Mullot, F. Auge, Ph. Balcou, H. G. Muller, and P. Agostini, "Observation of a train of attosecond pulses from high harmonic generation," Science 292, 1689-1692 (2001).
[CrossRef] [PubMed]

Biegert, J.

J. Biegert, A. Heinrich, C. P. Hauri, W. Cornelis, P. Schlup, M. P. Anscombe, M. B. Gaarde, K. J. Schafer, and U. Keller, "Control of high-order harmonic emission using attosecond pulse trains," J. Mod. Opt. 53, 87-96 (2006).
[CrossRef]

K. J. Schafer, M. B. Gaarde, A. Heinrich, J. Biegert, and U. Keller, "Strong field quantum path control using attosecond pulse trains," Phys. Rev. Lett. 92, 023003 (2004).
[CrossRef] [PubMed]

Bohan, A.

A. Bohan, P. Antoine, D. B. Milosevic, and B. Piraux, "Phase-dependent harmonic emission with ultrashort laser pulses," Phys. Rev. Lett. 81, 1837-1840 (1998).
[CrossRef]

Brabec, T.

M. Hentschel, R. Kienberger, Ch. Spielmann, G. A. Reider, N. Milosevic, T. Brabec, P. Corkum, U. Heinzmann, M. Drescher, and F. Krausz, "Attosecond metrology," Nature 414, 509-513 (2001).
[CrossRef] [PubMed]

Breger, P.

P. M. Paul, E. S. Toma, P. Breger, G. Mullot, F. Auge, Ph. Balcou, H. G. Muller, and P. Agostini, "Observation of a train of attosecond pulses from high harmonic generation," Science 292, 1689-1692 (2001).
[CrossRef] [PubMed]

Burnett, K.

A. Sanpera, J. B. Watson, M. Lewenstein, and K. Burnett, "Harmonic-generation control," Phys. Rev. A 54, 4320-4326 (1996).
[CrossRef] [PubMed]

J. B. Watson, A. Sanpera, X. Chen, and K. Burnett, "Harmonic generation from a coherent superposition of states," Phys. Rev. A 53, R1962-R1965 (1996).
[CrossRef] [PubMed]

Chen, S.

B. Wang, T. Cheng, X. Li, P. Fu, S. Chen, and J. Liu, "Pulse-duration dependence of high-order harmonic generation with coherent superposition state," Phys. Rev. A 72, 063412 (2005).
[CrossRef]

Chen, X.

J. B. Watson, A. Sanpera, X. Chen, and K. Burnett, "Harmonic generation from a coherent superposition of states," Phys. Rev. A 53, R1962-R1965 (1996).
[CrossRef] [PubMed]

Cheng, T.

B. Wang, T. Cheng, X. Li, P. Fu, S. Chen, and J. Liu, "Pulse-duration dependence of high-order harmonic generation with coherent superposition state," Phys. Rev. A 72, 063412 (2005).
[CrossRef]

Christov, I. P.

I. P. Christov, M. M. Murnane, and H. C. Kapteyn, "High-harmonic generation of attosecond pulses in the "single-cycle" regime," Phys. Rev. Lett. 78, 1251-1254 (1997).
[CrossRef]

Corkum, P.

M. Hentschel, R. Kienberger, Ch. Spielmann, G. A. Reider, N. Milosevic, T. Brabec, P. Corkum, U. Heinzmann, M. Drescher, and F. Krausz, "Attosecond metrology," Nature 414, 509-513 (2001).
[CrossRef] [PubMed]

Corkum, P. B.

P. B. Corkum, "Plasma perspective on strong-field multiphoton ionization," Phys. Rev. Lett. 71, 1994-1997 (1993).
[CrossRef] [PubMed]

Cornelis, W.

J. Biegert, A. Heinrich, C. P. Hauri, W. Cornelis, P. Schlup, M. P. Anscombe, M. B. Gaarde, K. J. Schafer, and U. Keller, "Control of high-order harmonic emission using attosecond pulse trains," J. Mod. Opt. 53, 87-96 (2006).
[CrossRef]

Drescher, M.

M. Hentschel, R. Kienberger, Ch. Spielmann, G. A. Reider, N. Milosevic, T. Brabec, P. Corkum, U. Heinzmann, M. Drescher, and F. Krausz, "Attosecond metrology," Nature 414, 509-513 (2001).
[CrossRef] [PubMed]

Fu, P.

B. Wang, T. Cheng, X. Li, P. Fu, S. Chen, and J. Liu, "Pulse-duration dependence of high-order harmonic generation with coherent superposition state," Phys. Rev. A 72, 063412 (2005).
[CrossRef]

Gaarde, M. B.

J. Biegert, A. Heinrich, C. P. Hauri, W. Cornelis, P. Schlup, M. P. Anscombe, M. B. Gaarde, K. J. Schafer, and U. Keller, "Control of high-order harmonic emission using attosecond pulse trains," J. Mod. Opt. 53, 87-96 (2006).
[CrossRef]

K. J. Schafer, M. B. Gaarde, A. Heinrich, J. Biegert, and U. Keller, "Strong field quantum path control using attosecond pulse trains," Phys. Rev. Lett. 92, 023003 (2004).
[CrossRef] [PubMed]

Gallmann, L.

T. Pfeifer, L. Gallmann, M. J. Abel, P. M. Nagel, D. M. Neumark, and S. R. Leone, "Heterodyne mixing of laser fields for temporal gating of high-order harmonic generation," Phys. Rev. Lett. 97, 163901 (2006).
[CrossRef] [PubMed]

T. Pfeifer, L. Gallmann, M. J. Abel, D. M. Neumark, and S. R. Leone, "Single attosecond pulse generation in the multicycle-driver regime by adding a weak second-harmonic field," Opt. Lett. 31, 975-977 (2006).
[CrossRef] [PubMed]

Hauri, C. P.

J. Biegert, A. Heinrich, C. P. Hauri, W. Cornelis, P. Schlup, M. P. Anscombe, M. B. Gaarde, K. J. Schafer, and U. Keller, "Control of high-order harmonic emission using attosecond pulse trains," J. Mod. Opt. 53, 87-96 (2006).
[CrossRef]

Heinrich, A.

J. Biegert, A. Heinrich, C. P. Hauri, W. Cornelis, P. Schlup, M. P. Anscombe, M. B. Gaarde, K. J. Schafer, and U. Keller, "Control of high-order harmonic emission using attosecond pulse trains," J. Mod. Opt. 53, 87-96 (2006).
[CrossRef]

K. J. Schafer, M. B. Gaarde, A. Heinrich, J. Biegert, and U. Keller, "Strong field quantum path control using attosecond pulse trains," Phys. Rev. Lett. 92, 023003 (2004).
[CrossRef] [PubMed]

Heinzmann, U.

M. Hentschel, R. Kienberger, Ch. Spielmann, G. A. Reider, N. Milosevic, T. Brabec, P. Corkum, U. Heinzmann, M. Drescher, and F. Krausz, "Attosecond metrology," Nature 414, 509-513 (2001).
[CrossRef] [PubMed]

Hentschel, M.

M. Hentschel, R. Kienberger, Ch. Spielmann, G. A. Reider, N. Milosevic, T. Brabec, P. Corkum, U. Heinzmann, M. Drescher, and F. Krausz, "Attosecond metrology," Nature 414, 509-513 (2001).
[CrossRef] [PubMed]

Ishikawa, K. L.

K. L. Ishikawa, "Efficient photoemission and ionization of He+ by a combined fundamental laser and high-order harmonic pulse," Phys. Rev. A 70, 013412 (2004).
[CrossRef]

K. L. Ishikawa, "Photoemission and ionization of He+ under simultaneous irradiation of fundamental laser and high-order harmonic pulses," Phys. Rev. Lett. 91, 043002 (2003).
[CrossRef] [PubMed]

Kapteyn, H. C.

I. P. Christov, M. M. Murnane, and H. C. Kapteyn, "High-harmonic generation of attosecond pulses in the "single-cycle" regime," Phys. Rev. Lett. 78, 1251-1254 (1997).
[CrossRef]

Keller, U.

J. Biegert, A. Heinrich, C. P. Hauri, W. Cornelis, P. Schlup, M. P. Anscombe, M. B. Gaarde, K. J. Schafer, and U. Keller, "Control of high-order harmonic emission using attosecond pulse trains," J. Mod. Opt. 53, 87-96 (2006).
[CrossRef]

K. J. Schafer, M. B. Gaarde, A. Heinrich, J. Biegert, and U. Keller, "Strong field quantum path control using attosecond pulse trains," Phys. Rev. Lett. 92, 023003 (2004).
[CrossRef] [PubMed]

Kienberger, R.

M. Hentschel, R. Kienberger, Ch. Spielmann, G. A. Reider, N. Milosevic, T. Brabec, P. Corkum, U. Heinzmann, M. Drescher, and F. Krausz, "Attosecond metrology," Nature 414, 509-513 (2001).
[CrossRef] [PubMed]

Krausz, F.

M. Hentschel, R. Kienberger, Ch. Spielmann, G. A. Reider, N. Milosevic, T. Brabec, P. Corkum, U. Heinzmann, M. Drescher, and F. Krausz, "Attosecond metrology," Nature 414, 509-513 (2001).
[CrossRef] [PubMed]

Kulander, K. C.

K. J. Schafer and K. C. Kulander, "High harmonic generation from ultrafast pump lasers," Phys. Rev. Lett. 78, 638-641 (1997).
[CrossRef]

Leone, S. R.

T. Pfeifer, L. Gallmann, M. J. Abel, D. M. Neumark, and S. R. Leone, "Single attosecond pulse generation in the multicycle-driver regime by adding a weak second-harmonic field," Opt. Lett. 31, 975-977 (2006).
[CrossRef] [PubMed]

T. Pfeifer, L. Gallmann, M. J. Abel, P. M. Nagel, D. M. Neumark, and S. R. Leone, "Heterodyne mixing of laser fields for temporal gating of high-order harmonic generation," Phys. Rev. Lett. 97, 163901 (2006).
[CrossRef] [PubMed]

Lewenstein, M.

A. Sanpera, J. B. Watson, M. Lewenstein, and K. Burnett, "Harmonic-generation control," Phys. Rev. A 54, 4320-4326 (1996).
[CrossRef] [PubMed]

Li, R.

Z. Zeng, R. Li, X. Xie, and Z. Xu, "High-intensity attosecond high-order harmonic generation driven by a synthesized laser field," Phys. Rev. A 70, 053809 (2004).
[CrossRef]

Li, X.

B. Wang, T. Cheng, X. Li, P. Fu, S. Chen, and J. Liu, "Pulse-duration dependence of high-order harmonic generation with coherent superposition state," Phys. Rev. A 72, 063412 (2005).
[CrossRef]

Liu, J.

B. Wang, T. Cheng, X. Li, P. Fu, S. Chen, and J. Liu, "Pulse-duration dependence of high-order harmonic generation with coherent superposition state," Phys. Rev. A 72, 063412 (2005).
[CrossRef]

Maquet, A.

P. Antoine, B. Piraux, and A. Maquet, "Time profile of harmonics generated by a single atom in a strong electromagnetic field," Phys. Rev. A 51, R1750-R1753 (1995).
[CrossRef] [PubMed]

Milosevic, D. B.

A. Bohan, P. Antoine, D. B. Milosevic, and B. Piraux, "Phase-dependent harmonic emission with ultrashort laser pulses," Phys. Rev. Lett. 81, 1837-1840 (1998).
[CrossRef]

Milosevic, N.

M. Hentschel, R. Kienberger, Ch. Spielmann, G. A. Reider, N. Milosevic, T. Brabec, P. Corkum, U. Heinzmann, M. Drescher, and F. Krausz, "Attosecond metrology," Nature 414, 509-513 (2001).
[CrossRef] [PubMed]

Muller, H. G.

P. M. Paul, E. S. Toma, P. Breger, G. Mullot, F. Auge, Ph. Balcou, H. G. Muller, and P. Agostini, "Observation of a train of attosecond pulses from high harmonic generation," Science 292, 1689-1692 (2001).
[CrossRef] [PubMed]

Mullot, G.

P. M. Paul, E. S. Toma, P. Breger, G. Mullot, F. Auge, Ph. Balcou, H. G. Muller, and P. Agostini, "Observation of a train of attosecond pulses from high harmonic generation," Science 292, 1689-1692 (2001).
[CrossRef] [PubMed]

Murnane, M. M.

I. P. Christov, M. M. Murnane, and H. C. Kapteyn, "High-harmonic generation of attosecond pulses in the "single-cycle" regime," Phys. Rev. Lett. 78, 1251-1254 (1997).
[CrossRef]

Nagel, P. M.

T. Pfeifer, L. Gallmann, M. J. Abel, P. M. Nagel, D. M. Neumark, and S. R. Leone, "Heterodyne mixing of laser fields for temporal gating of high-order harmonic generation," Phys. Rev. Lett. 97, 163901 (2006).
[CrossRef] [PubMed]

Neumark, D. M.

T. Pfeifer, L. Gallmann, M. J. Abel, P. M. Nagel, D. M. Neumark, and S. R. Leone, "Heterodyne mixing of laser fields for temporal gating of high-order harmonic generation," Phys. Rev. Lett. 97, 163901 (2006).
[CrossRef] [PubMed]

T. Pfeifer, L. Gallmann, M. J. Abel, D. M. Neumark, and S. R. Leone, "Single attosecond pulse generation in the multicycle-driver regime by adding a weak second-harmonic field," Opt. Lett. 31, 975-977 (2006).
[CrossRef] [PubMed]

Paul, P. M.

P. M. Paul, E. S. Toma, P. Breger, G. Mullot, F. Auge, Ph. Balcou, H. G. Muller, and P. Agostini, "Observation of a train of attosecond pulses from high harmonic generation," Science 292, 1689-1692 (2001).
[CrossRef] [PubMed]

Pfeifer, T.

T. Pfeifer, L. Gallmann, M. J. Abel, P. M. Nagel, D. M. Neumark, and S. R. Leone, "Heterodyne mixing of laser fields for temporal gating of high-order harmonic generation," Phys. Rev. Lett. 97, 163901 (2006).
[CrossRef] [PubMed]

T. Pfeifer, L. Gallmann, M. J. Abel, D. M. Neumark, and S. R. Leone, "Single attosecond pulse generation in the multicycle-driver regime by adding a weak second-harmonic field," Opt. Lett. 31, 975-977 (2006).
[CrossRef] [PubMed]

Piraux, B.

A. Bohan, P. Antoine, D. B. Milosevic, and B. Piraux, "Phase-dependent harmonic emission with ultrashort laser pulses," Phys. Rev. Lett. 81, 1837-1840 (1998).
[CrossRef]

P. Antoine, B. Piraux, and A. Maquet, "Time profile of harmonics generated by a single atom in a strong electromagnetic field," Phys. Rev. A 51, R1750-R1753 (1995).
[CrossRef] [PubMed]

Reider, G. A.

M. Hentschel, R. Kienberger, Ch. Spielmann, G. A. Reider, N. Milosevic, T. Brabec, P. Corkum, U. Heinzmann, M. Drescher, and F. Krausz, "Attosecond metrology," Nature 414, 509-513 (2001).
[CrossRef] [PubMed]

Sanpera, A.

J. B. Watson, A. Sanpera, X. Chen, and K. Burnett, "Harmonic generation from a coherent superposition of states," Phys. Rev. A 53, R1962-R1965 (1996).
[CrossRef] [PubMed]

A. Sanpera, J. B. Watson, M. Lewenstein, and K. Burnett, "Harmonic-generation control," Phys. Rev. A 54, 4320-4326 (1996).
[CrossRef] [PubMed]

Schafer, K. J.

J. Biegert, A. Heinrich, C. P. Hauri, W. Cornelis, P. Schlup, M. P. Anscombe, M. B. Gaarde, K. J. Schafer, and U. Keller, "Control of high-order harmonic emission using attosecond pulse trains," J. Mod. Opt. 53, 87-96 (2006).
[CrossRef]

K. J. Schafer, M. B. Gaarde, A. Heinrich, J. Biegert, and U. Keller, "Strong field quantum path control using attosecond pulse trains," Phys. Rev. Lett. 92, 023003 (2004).
[CrossRef] [PubMed]

K. J. Schafer and K. C. Kulander, "High harmonic generation from ultrafast pump lasers," Phys. Rev. Lett. 78, 638-641 (1997).
[CrossRef]

Schlup, P.

J. Biegert, A. Heinrich, C. P. Hauri, W. Cornelis, P. Schlup, M. P. Anscombe, M. B. Gaarde, K. J. Schafer, and U. Keller, "Control of high-order harmonic emission using attosecond pulse trains," J. Mod. Opt. 53, 87-96 (2006).
[CrossRef]

Scrinzi, A.

V. S. Yakovlev and A. Scrinzi, "High harmonic imaging of few-cycle laser pulses," Phys. Rev. Lett. 91, 153901 (2003).
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P. M. Paul, E. S. Toma, P. Breger, G. Mullot, F. Auge, Ph. Balcou, H. G. Muller, and P. Agostini, "Observation of a train of attosecond pulses from high harmonic generation," Science 292, 1689-1692 (2001).
[CrossRef] [PubMed]

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Figures (4)

Fig. 1
Fig. 1

(a) Harmonic spectra and (b) ionization by simultaneous irradiation of an infrared laser and an APT on He + for a time delay of 0.44 T (dashed curve) and 0.56 T (solid curve). Return energy as a function as ionization time is also plotted (b). Peak intensity for the infrared pulse is 8 × 10 14 W cm 2 and 5 × 10 13 W cm 2 for APT. The wavelength of the main infrared laser and the APT pump lasers is same with λ 0 = λ 1 = 780 nm . The pulse width τ 0 = 3 T , where T is the duration of a single optical cycle of the infrared laser.

Fig. 2
Fig. 2

Ionization as a function of time for different infrared pulse widths, (a) τ 0 = 3 T , (b) τ 0 = 4 T , (c) τ 0 = 5 T , (d) τ 0 = 6 T , (e) τ 0 = 7 T , (f) τ 0 = 8 T . Return energy as a function of ionization time for τ 0 = 5 T is also plotted. The wavelength is λ 0 = 760 nm for the main infrared laser and λ 1 = 840 nm for the APT pump laser. APT consists of the high-order harmonics from 16th to 20th order and the time delay t d = 0.56 T . Intensity of the infrared laser and APT is the same as those used in Fig. 1.

Fig. 3
Fig. 3

Time-frequency plot for two different infrared pulse widths, (a) τ 0 = 5 T and (b) τ 0 = 7 T . Other parameters are the same as in Fig. 2.

Fig. 4
Fig. 4

Intensity temporal profiles of generated single attosecond pulses for different infrared laser pulse widths. The other parameters are the same as in Fig. 2.

Equations (1)

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E ( t ) = E 0 ( t ) cos ω 0 t + E h ( t t d ) q cos [ q ω 1 ( t t d ) + ϕ q ] .

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