Abstract

We theoretically investigate the high-order harmonic generation driven by laser pulses with a π-phase jump. The cutoff of high-order harmonic spectrum extends dramatically due to the phase jump which enlarges the asymmetry of the laser field. We find that the intensity and the coherence of the continuum can be controlled by the jump time. By selecting proper frequency of the continuum spectrum, a sub-100-attosecond pulse can be generated without any phase compensation.

© 2012 OSA

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  1. P. Agostini and L. F. DiMauro, “The physics of attosecond light pulses,” Rep. Prog. Phys.67(6), 813–855 (2004).
    [CrossRef]
  2. F. Krausz and M. Ivanov, “Attosecond physics,” Rev. Mod. Phys.81(1), 163–234 (2009).
    [CrossRef]
  3. P. B. Corkum, “Plasma perspective on strong field multiphoton ionization,” Phys. Rev. Lett.71(13), 1994–1997 (1993).
    [CrossRef] [PubMed]
  4. T. Brabec and F. Krausz, “Intense few-cycle laser fields: Frontiers of nonlinear optics,” Rev. Mod. Phys.72(2), 545–591 (2000).
    [CrossRef]
  5. D. B. Milošević, G. G. Paulus, D. Bauer, and W. Becker, “Above-threshold ionization by few-cycle pulses,” J. Phys. B39(14), R203–R262 (2006).
    [CrossRef]
  6. P. B. Corkum, N. H. Burnett, and M. Y. Ivanov, “Subfemtosecond pulses,” Opt. Lett.19(22), 1870–1872 (1994).
    [CrossRef] [PubMed]
  7. Q. Zhang, P. Lu, P. Lan, W. Hong, and Z. Yang, “Multi-cycle laser-driven broadband supercontinuum with a modulated polarization gating,” Opt. Express16(13), 9795–9803 (2008).
    [CrossRef] [PubMed]
  8. Y. Yu, X. Song, Y. Fu, R. Li, Y. Cheng, and Z. Xu, “Theoretical investigation of single attosecond pulse generation in an orthogonally polarized two-color laser field,” Opt. Express16(2), 686–694 (2008).
    [CrossRef] [PubMed]
  9. Y. Xiang, Y. Niu, and S. Gong, “Proposal for isolated-attosecond-pulse generation in the multicycle regime through modulation of the carrier wave,” Phys. Rev. A85(2), 023808 (2012).
    [CrossRef]
  10. P. Lan, E. J. Takahashi, and K. Midorikawa, “Optimization of infrared two-color multicycle field synthesis for intense-isolated-attosecond-pulse generation,” Phys. Rev. A82(5), 053413 (2010).
    [CrossRef]
  11. B. Kim, J. An, Y. Yu, Y. Cheng, Z. Xu, and D. E. Kim, “Optimization of multi-cycle two-color laser fields for the generation of an isolated attosecond pulse,” Opt. Express16(14), 10331–10340 (2008).
    [CrossRef] [PubMed]
  12. H.-C. Bandulet, D. Comtois, E. Bisson, A. Fleischer, H. Pepin, J.-C. Kieffer, P. B. Corkum, and D. M. Villeneuve, “Gating attosecond pulse train generation using multicolor laser fields,” Phys. Rev. A81(1), 013803 (2010).
    [CrossRef]
  13. J. J. Carrera and S.-I. Chu, “Extension of high-order harmonic generation cutoff via coherent control of intense few-cycle chirped laser pulses,” Phys. Rev. A75(3), 033807 (2007).
    [CrossRef]
  14. S. Odžak and D. B. Milosevic, “Attosecond pulse generation by a coplanar circular and static field combination,” Phys. Lett. A355(4-5), 368–372 (2006).
    [CrossRef]
  15. W. Hong, P. Lu, W. Cao, P. Lan, and X. Wang, “Control of quantum paths of high-order harmonics and attosecond pulse generation in the presence of a static electric field,” J. Phys. B40(12), 2321–2331 (2007).
    [CrossRef]
  16. B. T. Torosov and N. V. Vitanov, “Coherent control of a quantum transition by a phase jump,” Phys. Rev. A76(5), 053404 (2007).
    [CrossRef]
  17. J. Qian, Y. Qian, M. Ke, X. Feng, C. H. Oh, and Y. Wang, “Breakdown of the dipole blockade with a zero-area phase-jump pulse,” Phys. Rev. A80(5), 053413 (2009).
    [CrossRef]
  18. P. K. Jha, H. Eleuch, and Y. V. Rostovtsev, “Coherent control of atomic excitation using off-resonant strong few-cycle pulses,” Phys. Rev. A82(4), 045805 (2010).
    [CrossRef]
  19. Y. Xiang, Y. Niu, and S. Gong, “Control of the high-order harmonics cutoff through the combination of a chirped laser and static electric field,” Phys. Rev. A79(5), 053419 (2009).
    [CrossRef]
  20. H. Xu, X. Tang, and P. Lambropoulos, “Nonperturbative theory of harmonic generation in helium under a high-intensity laser field: The role of intermediate resonance and of the ion,” Phys. Rev. A46(5), R2225–R2228 (1992).
    [CrossRef] [PubMed]
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    [CrossRef] [PubMed]
  24. M. Protopapas, D. G. Lappas, C. H. Keitel, and P. L. Knight, “Recollisions, bremsstrahlung, and attosecond pulses from intense laser fields,” Phys. Rev. A53(5), R2933–R2936 (1996).
    [CrossRef] [PubMed]
  25. M. Ammosov, N. Delone, and V. Krainov, “Tunnel ionization of complex atoms and of atomic ions in an alternating electromagnetic field,” Sov. Phys. JETP64, 1191–1194 (1986).
  26. P. Antoine, A. L’Huillier, and M. Lewenstein, “Attosecond pulse trains using high–order harmonics,” Phys. Rev. Lett.77(7), 1234–1237 (1996).
    [CrossRef] [PubMed]
  27. X. M. Tong and S.-I. Chu, “Probing the spectral and temporal structures of high-order harmonic generation in intense laser pulses,” Phys. Rev. A61(2), 021802 (2000).
    [CrossRef]

2012 (1)

Y. Xiang, Y. Niu, and S. Gong, “Proposal for isolated-attosecond-pulse generation in the multicycle regime through modulation of the carrier wave,” Phys. Rev. A85(2), 023808 (2012).
[CrossRef]

2010 (3)

P. Lan, E. J. Takahashi, and K. Midorikawa, “Optimization of infrared two-color multicycle field synthesis for intense-isolated-attosecond-pulse generation,” Phys. Rev. A82(5), 053413 (2010).
[CrossRef]

H.-C. Bandulet, D. Comtois, E. Bisson, A. Fleischer, H. Pepin, J.-C. Kieffer, P. B. Corkum, and D. M. Villeneuve, “Gating attosecond pulse train generation using multicolor laser fields,” Phys. Rev. A81(1), 013803 (2010).
[CrossRef]

P. K. Jha, H. Eleuch, and Y. V. Rostovtsev, “Coherent control of atomic excitation using off-resonant strong few-cycle pulses,” Phys. Rev. A82(4), 045805 (2010).
[CrossRef]

2009 (3)

Y. Xiang, Y. Niu, and S. Gong, “Control of the high-order harmonics cutoff through the combination of a chirped laser and static electric field,” Phys. Rev. A79(5), 053419 (2009).
[CrossRef]

F. Krausz and M. Ivanov, “Attosecond physics,” Rev. Mod. Phys.81(1), 163–234 (2009).
[CrossRef]

J. Qian, Y. Qian, M. Ke, X. Feng, C. H. Oh, and Y. Wang, “Breakdown of the dipole blockade with a zero-area phase-jump pulse,” Phys. Rev. A80(5), 053413 (2009).
[CrossRef]

2008 (3)

2007 (3)

J. J. Carrera and S.-I. Chu, “Extension of high-order harmonic generation cutoff via coherent control of intense few-cycle chirped laser pulses,” Phys. Rev. A75(3), 033807 (2007).
[CrossRef]

W. Hong, P. Lu, W. Cao, P. Lan, and X. Wang, “Control of quantum paths of high-order harmonics and attosecond pulse generation in the presence of a static electric field,” J. Phys. B40(12), 2321–2331 (2007).
[CrossRef]

B. T. Torosov and N. V. Vitanov, “Coherent control of a quantum transition by a phase jump,” Phys. Rev. A76(5), 053404 (2007).
[CrossRef]

2006 (2)

S. Odžak and D. B. Milosevic, “Attosecond pulse generation by a coplanar circular and static field combination,” Phys. Lett. A355(4-5), 368–372 (2006).
[CrossRef]

D. B. Milošević, G. G. Paulus, D. Bauer, and W. Becker, “Above-threshold ionization by few-cycle pulses,” J. Phys. B39(14), R203–R262 (2006).
[CrossRef]

2004 (1)

P. Agostini and L. F. DiMauro, “The physics of attosecond light pulses,” Rep. Prog. Phys.67(6), 813–855 (2004).
[CrossRef]

2000 (2)

T. Brabec and F. Krausz, “Intense few-cycle laser fields: Frontiers of nonlinear optics,” Rev. Mod. Phys.72(2), 545–591 (2000).
[CrossRef]

X. M. Tong and S.-I. Chu, “Probing the spectral and temporal structures of high-order harmonic generation in intense laser pulses,” Phys. Rev. A61(2), 021802 (2000).
[CrossRef]

1996 (2)

P. Antoine, A. L’Huillier, and M. Lewenstein, “Attosecond pulse trains using high–order harmonics,” Phys. Rev. Lett.77(7), 1234–1237 (1996).
[CrossRef] [PubMed]

M. Protopapas, D. G. Lappas, C. H. Keitel, and P. L. Knight, “Recollisions, bremsstrahlung, and attosecond pulses from intense laser fields,” Phys. Rev. A53(5), R2933–R2936 (1996).
[CrossRef] [PubMed]

1994 (1)

1993 (1)

P. B. Corkum, “Plasma perspective on strong field multiphoton ionization,” Phys. Rev. Lett.71(13), 1994–1997 (1993).
[CrossRef] [PubMed]

1992 (2)

H. Xu, X. Tang, and P. Lambropoulos, “Nonperturbative theory of harmonic generation in helium under a high-intensity laser field: The role of intermediate resonance and of the ion,” Phys. Rev. A46(5), R2225–R2228 (1992).
[CrossRef] [PubMed]

K. Burnett, V. C. Reed, J. Cooper, and P. L. Knight, “Calculation of the background emitted during high-harmonic generation,” Phys. Rev. A45(5), 3347–3349 (1992).
[CrossRef] [PubMed]

1986 (1)

M. Ammosov, N. Delone, and V. Krainov, “Tunnel ionization of complex atoms and of atomic ions in an alternating electromagnetic field,” Sov. Phys. JETP64, 1191–1194 (1986).

Agostini, P.

P. Agostini and L. F. DiMauro, “The physics of attosecond light pulses,” Rep. Prog. Phys.67(6), 813–855 (2004).
[CrossRef]

Ammosov, M.

M. Ammosov, N. Delone, and V. Krainov, “Tunnel ionization of complex atoms and of atomic ions in an alternating electromagnetic field,” Sov. Phys. JETP64, 1191–1194 (1986).

An, J.

Antoine, P.

P. Antoine, A. L’Huillier, and M. Lewenstein, “Attosecond pulse trains using high–order harmonics,” Phys. Rev. Lett.77(7), 1234–1237 (1996).
[CrossRef] [PubMed]

Bandulet, H.-C.

H.-C. Bandulet, D. Comtois, E. Bisson, A. Fleischer, H. Pepin, J.-C. Kieffer, P. B. Corkum, and D. M. Villeneuve, “Gating attosecond pulse train generation using multicolor laser fields,” Phys. Rev. A81(1), 013803 (2010).
[CrossRef]

Bauer, D.

D. B. Milošević, G. G. Paulus, D. Bauer, and W. Becker, “Above-threshold ionization by few-cycle pulses,” J. Phys. B39(14), R203–R262 (2006).
[CrossRef]

Becker, W.

D. B. Milošević, G. G. Paulus, D. Bauer, and W. Becker, “Above-threshold ionization by few-cycle pulses,” J. Phys. B39(14), R203–R262 (2006).
[CrossRef]

Bisson, E.

H.-C. Bandulet, D. Comtois, E. Bisson, A. Fleischer, H. Pepin, J.-C. Kieffer, P. B. Corkum, and D. M. Villeneuve, “Gating attosecond pulse train generation using multicolor laser fields,” Phys. Rev. A81(1), 013803 (2010).
[CrossRef]

Brabec, T.

T. Brabec and F. Krausz, “Intense few-cycle laser fields: Frontiers of nonlinear optics,” Rev. Mod. Phys.72(2), 545–591 (2000).
[CrossRef]

Burnett, K.

K. Burnett, V. C. Reed, J. Cooper, and P. L. Knight, “Calculation of the background emitted during high-harmonic generation,” Phys. Rev. A45(5), 3347–3349 (1992).
[CrossRef] [PubMed]

Burnett, N. H.

Cao, W.

W. Hong, P. Lu, W. Cao, P. Lan, and X. Wang, “Control of quantum paths of high-order harmonics and attosecond pulse generation in the presence of a static electric field,” J. Phys. B40(12), 2321–2331 (2007).
[CrossRef]

Carrera, J. J.

J. J. Carrera and S.-I. Chu, “Extension of high-order harmonic generation cutoff via coherent control of intense few-cycle chirped laser pulses,” Phys. Rev. A75(3), 033807 (2007).
[CrossRef]

Cheng, Y.

Chu, S.-I.

J. J. Carrera and S.-I. Chu, “Extension of high-order harmonic generation cutoff via coherent control of intense few-cycle chirped laser pulses,” Phys. Rev. A75(3), 033807 (2007).
[CrossRef]

X. M. Tong and S.-I. Chu, “Probing the spectral and temporal structures of high-order harmonic generation in intense laser pulses,” Phys. Rev. A61(2), 021802 (2000).
[CrossRef]

Comtois, D.

H.-C. Bandulet, D. Comtois, E. Bisson, A. Fleischer, H. Pepin, J.-C. Kieffer, P. B. Corkum, and D. M. Villeneuve, “Gating attosecond pulse train generation using multicolor laser fields,” Phys. Rev. A81(1), 013803 (2010).
[CrossRef]

Cooper, J.

K. Burnett, V. C. Reed, J. Cooper, and P. L. Knight, “Calculation of the background emitted during high-harmonic generation,” Phys. Rev. A45(5), 3347–3349 (1992).
[CrossRef] [PubMed]

Corkum, P. B.

H.-C. Bandulet, D. Comtois, E. Bisson, A. Fleischer, H. Pepin, J.-C. Kieffer, P. B. Corkum, and D. M. Villeneuve, “Gating attosecond pulse train generation using multicolor laser fields,” Phys. Rev. A81(1), 013803 (2010).
[CrossRef]

P. B. Corkum, N. H. Burnett, and M. Y. Ivanov, “Subfemtosecond pulses,” Opt. Lett.19(22), 1870–1872 (1994).
[CrossRef] [PubMed]

P. B. Corkum, “Plasma perspective on strong field multiphoton ionization,” Phys. Rev. Lett.71(13), 1994–1997 (1993).
[CrossRef] [PubMed]

Delone, N.

M. Ammosov, N. Delone, and V. Krainov, “Tunnel ionization of complex atoms and of atomic ions in an alternating electromagnetic field,” Sov. Phys. JETP64, 1191–1194 (1986).

DiMauro, L. F.

P. Agostini and L. F. DiMauro, “The physics of attosecond light pulses,” Rep. Prog. Phys.67(6), 813–855 (2004).
[CrossRef]

Eleuch, H.

P. K. Jha, H. Eleuch, and Y. V. Rostovtsev, “Coherent control of atomic excitation using off-resonant strong few-cycle pulses,” Phys. Rev. A82(4), 045805 (2010).
[CrossRef]

Feng, X.

J. Qian, Y. Qian, M. Ke, X. Feng, C. H. Oh, and Y. Wang, “Breakdown of the dipole blockade with a zero-area phase-jump pulse,” Phys. Rev. A80(5), 053413 (2009).
[CrossRef]

Fleischer, A.

H.-C. Bandulet, D. Comtois, E. Bisson, A. Fleischer, H. Pepin, J.-C. Kieffer, P. B. Corkum, and D. M. Villeneuve, “Gating attosecond pulse train generation using multicolor laser fields,” Phys. Rev. A81(1), 013803 (2010).
[CrossRef]

Fu, Y.

Gong, S.

Y. Xiang, Y. Niu, and S. Gong, “Proposal for isolated-attosecond-pulse generation in the multicycle regime through modulation of the carrier wave,” Phys. Rev. A85(2), 023808 (2012).
[CrossRef]

Y. Xiang, Y. Niu, and S. Gong, “Control of the high-order harmonics cutoff through the combination of a chirped laser and static electric field,” Phys. Rev. A79(5), 053419 (2009).
[CrossRef]

Hong, W.

Q. Zhang, P. Lu, P. Lan, W. Hong, and Z. Yang, “Multi-cycle laser-driven broadband supercontinuum with a modulated polarization gating,” Opt. Express16(13), 9795–9803 (2008).
[CrossRef] [PubMed]

W. Hong, P. Lu, W. Cao, P. Lan, and X. Wang, “Control of quantum paths of high-order harmonics and attosecond pulse generation in the presence of a static electric field,” J. Phys. B40(12), 2321–2331 (2007).
[CrossRef]

Ivanov, M.

F. Krausz and M. Ivanov, “Attosecond physics,” Rev. Mod. Phys.81(1), 163–234 (2009).
[CrossRef]

Ivanov, M. Y.

Jha, P. K.

P. K. Jha, H. Eleuch, and Y. V. Rostovtsev, “Coherent control of atomic excitation using off-resonant strong few-cycle pulses,” Phys. Rev. A82(4), 045805 (2010).
[CrossRef]

Ke, M.

J. Qian, Y. Qian, M. Ke, X. Feng, C. H. Oh, and Y. Wang, “Breakdown of the dipole blockade with a zero-area phase-jump pulse,” Phys. Rev. A80(5), 053413 (2009).
[CrossRef]

Keitel, C. H.

M. Protopapas, D. G. Lappas, C. H. Keitel, and P. L. Knight, “Recollisions, bremsstrahlung, and attosecond pulses from intense laser fields,” Phys. Rev. A53(5), R2933–R2936 (1996).
[CrossRef] [PubMed]

Kieffer, J.-C.

H.-C. Bandulet, D. Comtois, E. Bisson, A. Fleischer, H. Pepin, J.-C. Kieffer, P. B. Corkum, and D. M. Villeneuve, “Gating attosecond pulse train generation using multicolor laser fields,” Phys. Rev. A81(1), 013803 (2010).
[CrossRef]

Kim, B.

Kim, D. E.

Knight, P. L.

M. Protopapas, D. G. Lappas, C. H. Keitel, and P. L. Knight, “Recollisions, bremsstrahlung, and attosecond pulses from intense laser fields,” Phys. Rev. A53(5), R2933–R2936 (1996).
[CrossRef] [PubMed]

K. Burnett, V. C. Reed, J. Cooper, and P. L. Knight, “Calculation of the background emitted during high-harmonic generation,” Phys. Rev. A45(5), 3347–3349 (1992).
[CrossRef] [PubMed]

Krainov, V.

M. Ammosov, N. Delone, and V. Krainov, “Tunnel ionization of complex atoms and of atomic ions in an alternating electromagnetic field,” Sov. Phys. JETP64, 1191–1194 (1986).

Krausz, F.

F. Krausz and M. Ivanov, “Attosecond physics,” Rev. Mod. Phys.81(1), 163–234 (2009).
[CrossRef]

T. Brabec and F. Krausz, “Intense few-cycle laser fields: Frontiers of nonlinear optics,” Rev. Mod. Phys.72(2), 545–591 (2000).
[CrossRef]

L’Huillier, A.

P. Antoine, A. L’Huillier, and M. Lewenstein, “Attosecond pulse trains using high–order harmonics,” Phys. Rev. Lett.77(7), 1234–1237 (1996).
[CrossRef] [PubMed]

Lambropoulos, P.

H. Xu, X. Tang, and P. Lambropoulos, “Nonperturbative theory of harmonic generation in helium under a high-intensity laser field: The role of intermediate resonance and of the ion,” Phys. Rev. A46(5), R2225–R2228 (1992).
[CrossRef] [PubMed]

Lan, P.

P. Lan, E. J. Takahashi, and K. Midorikawa, “Optimization of infrared two-color multicycle field synthesis for intense-isolated-attosecond-pulse generation,” Phys. Rev. A82(5), 053413 (2010).
[CrossRef]

Q. Zhang, P. Lu, P. Lan, W. Hong, and Z. Yang, “Multi-cycle laser-driven broadband supercontinuum with a modulated polarization gating,” Opt. Express16(13), 9795–9803 (2008).
[CrossRef] [PubMed]

W. Hong, P. Lu, W. Cao, P. Lan, and X. Wang, “Control of quantum paths of high-order harmonics and attosecond pulse generation in the presence of a static electric field,” J. Phys. B40(12), 2321–2331 (2007).
[CrossRef]

Lappas, D. G.

M. Protopapas, D. G. Lappas, C. H. Keitel, and P. L. Knight, “Recollisions, bremsstrahlung, and attosecond pulses from intense laser fields,” Phys. Rev. A53(5), R2933–R2936 (1996).
[CrossRef] [PubMed]

Lewenstein, M.

P. Antoine, A. L’Huillier, and M. Lewenstein, “Attosecond pulse trains using high–order harmonics,” Phys. Rev. Lett.77(7), 1234–1237 (1996).
[CrossRef] [PubMed]

Li, R.

Lu, P.

Q. Zhang, P. Lu, P. Lan, W. Hong, and Z. Yang, “Multi-cycle laser-driven broadband supercontinuum with a modulated polarization gating,” Opt. Express16(13), 9795–9803 (2008).
[CrossRef] [PubMed]

W. Hong, P. Lu, W. Cao, P. Lan, and X. Wang, “Control of quantum paths of high-order harmonics and attosecond pulse generation in the presence of a static electric field,” J. Phys. B40(12), 2321–2331 (2007).
[CrossRef]

Midorikawa, K.

P. Lan, E. J. Takahashi, and K. Midorikawa, “Optimization of infrared two-color multicycle field synthesis for intense-isolated-attosecond-pulse generation,” Phys. Rev. A82(5), 053413 (2010).
[CrossRef]

Milosevic, D. B.

S. Odžak and D. B. Milosevic, “Attosecond pulse generation by a coplanar circular and static field combination,” Phys. Lett. A355(4-5), 368–372 (2006).
[CrossRef]

Miloševic, D. B.

D. B. Milošević, G. G. Paulus, D. Bauer, and W. Becker, “Above-threshold ionization by few-cycle pulses,” J. Phys. B39(14), R203–R262 (2006).
[CrossRef]

Niu, Y.

Y. Xiang, Y. Niu, and S. Gong, “Proposal for isolated-attosecond-pulse generation in the multicycle regime through modulation of the carrier wave,” Phys. Rev. A85(2), 023808 (2012).
[CrossRef]

Y. Xiang, Y. Niu, and S. Gong, “Control of the high-order harmonics cutoff through the combination of a chirped laser and static electric field,” Phys. Rev. A79(5), 053419 (2009).
[CrossRef]

Odžak, S.

S. Odžak and D. B. Milosevic, “Attosecond pulse generation by a coplanar circular and static field combination,” Phys. Lett. A355(4-5), 368–372 (2006).
[CrossRef]

Oh, C. H.

J. Qian, Y. Qian, M. Ke, X. Feng, C. H. Oh, and Y. Wang, “Breakdown of the dipole blockade with a zero-area phase-jump pulse,” Phys. Rev. A80(5), 053413 (2009).
[CrossRef]

Paulus, G. G.

D. B. Milošević, G. G. Paulus, D. Bauer, and W. Becker, “Above-threshold ionization by few-cycle pulses,” J. Phys. B39(14), R203–R262 (2006).
[CrossRef]

Pepin, H.

H.-C. Bandulet, D. Comtois, E. Bisson, A. Fleischer, H. Pepin, J.-C. Kieffer, P. B. Corkum, and D. M. Villeneuve, “Gating attosecond pulse train generation using multicolor laser fields,” Phys. Rev. A81(1), 013803 (2010).
[CrossRef]

Protopapas, M.

M. Protopapas, D. G. Lappas, C. H. Keitel, and P. L. Knight, “Recollisions, bremsstrahlung, and attosecond pulses from intense laser fields,” Phys. Rev. A53(5), R2933–R2936 (1996).
[CrossRef] [PubMed]

Qian, J.

J. Qian, Y. Qian, M. Ke, X. Feng, C. H. Oh, and Y. Wang, “Breakdown of the dipole blockade with a zero-area phase-jump pulse,” Phys. Rev. A80(5), 053413 (2009).
[CrossRef]

Qian, Y.

J. Qian, Y. Qian, M. Ke, X. Feng, C. H. Oh, and Y. Wang, “Breakdown of the dipole blockade with a zero-area phase-jump pulse,” Phys. Rev. A80(5), 053413 (2009).
[CrossRef]

Reed, V. C.

K. Burnett, V. C. Reed, J. Cooper, and P. L. Knight, “Calculation of the background emitted during high-harmonic generation,” Phys. Rev. A45(5), 3347–3349 (1992).
[CrossRef] [PubMed]

Rostovtsev, Y. V.

P. K. Jha, H. Eleuch, and Y. V. Rostovtsev, “Coherent control of atomic excitation using off-resonant strong few-cycle pulses,” Phys. Rev. A82(4), 045805 (2010).
[CrossRef]

Song, X.

Takahashi, E. J.

P. Lan, E. J. Takahashi, and K. Midorikawa, “Optimization of infrared two-color multicycle field synthesis for intense-isolated-attosecond-pulse generation,” Phys. Rev. A82(5), 053413 (2010).
[CrossRef]

Tang, X.

H. Xu, X. Tang, and P. Lambropoulos, “Nonperturbative theory of harmonic generation in helium under a high-intensity laser field: The role of intermediate resonance and of the ion,” Phys. Rev. A46(5), R2225–R2228 (1992).
[CrossRef] [PubMed]

Tong, X. M.

X. M. Tong and S.-I. Chu, “Probing the spectral and temporal structures of high-order harmonic generation in intense laser pulses,” Phys. Rev. A61(2), 021802 (2000).
[CrossRef]

Torosov, B. T.

B. T. Torosov and N. V. Vitanov, “Coherent control of a quantum transition by a phase jump,” Phys. Rev. A76(5), 053404 (2007).
[CrossRef]

Villeneuve, D. M.

H.-C. Bandulet, D. Comtois, E. Bisson, A. Fleischer, H. Pepin, J.-C. Kieffer, P. B. Corkum, and D. M. Villeneuve, “Gating attosecond pulse train generation using multicolor laser fields,” Phys. Rev. A81(1), 013803 (2010).
[CrossRef]

Vitanov, N. V.

B. T. Torosov and N. V. Vitanov, “Coherent control of a quantum transition by a phase jump,” Phys. Rev. A76(5), 053404 (2007).
[CrossRef]

Wang, X.

W. Hong, P. Lu, W. Cao, P. Lan, and X. Wang, “Control of quantum paths of high-order harmonics and attosecond pulse generation in the presence of a static electric field,” J. Phys. B40(12), 2321–2331 (2007).
[CrossRef]

Wang, Y.

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[CrossRef]

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[CrossRef]

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[CrossRef]

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Figures (5)

Fig. 1
Fig. 1

The HHG spectra driven by the pulses with different jump times.

Fig. 2
Fig. 2

The RKE of the electron as a function of born and return time and the electric fields for different jump times. (a) t 0 =0.75T ; (b) t 0 =0.25T ; (c) t 0 =0.25T ; (d) t 0 =0.75T .

Fig. 3
Fig. 3

The generated IAPs from the spectra of Fig. 1 driven by different pulses. (a) t 0 =0.75T ; (b) t 0 =0.25T ; (c) t 0 =0.25T ; (d) t 0 =0.75T . The harmonics used are from the 120th to 160th order.

Fig. 4
Fig. 4

The wavelet time-frequency profiles of the HHG spectra driven by the laser pulses with different phase jump times. (a) t 0 =0.75T ; (b) t 0 =0.25T ; (c) t 0 =0.25T ; (d) t 0 =0.75T .

Fig. 5
Fig. 5

The generated IAP from the HHG spectrum driven by phase jump laser pulses with different ϕ i . The harmonic orders used are from 120 to 160.

Equations (5)

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i ψ( r,t ) t =[ 1 2 2 + V c ( r )r·E( t ) ]ψ( r,t ),
d A ( t ) z ¨ ( t ) = ψ( r,t ) | V( r ) z E( t )| ψ( r,t ) ,
P( ω )= | d A ( t ) e jωt dt | 2 .
E( t )=Ff( t )cos( ωt+ ϕ i ),
E( t )={ Ff( t )cos( ωt+ ϕ i ) if t<t 0 , Ff( t )cos( ωt+ ϕ i + ϕ j ) if t t 0 ,

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